/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/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 00:23:32,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 00:23:32,127 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 00:23:32,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 00:23:32,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 00:23:32,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 00:23:32,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 00:23:32,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 00:23:32,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 00:23:32,151 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 00:23:32,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 00:23:32,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 00:23:32,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 00:23:32,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 00:23:32,153 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 00:23:32,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 00:23:32,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 00:23:32,154 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 00:23:32,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 00:23:32,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 00:23:32,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 00:23:32,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 00:23:32,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 00:23:32,158 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 00:23:32,161 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 00:23:32,161 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 00:23:32,162 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 00:23:32,162 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 00:23:32,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 00:23:32,162 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 00:23:32,163 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 00:23:32,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 00:23:32,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 00:23:32,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 00:23:32,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 00:23:32,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 00:23:32,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 00:23:32,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 00:23:32,164 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 00:23:32,164 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 00:23:32,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 00:23:32,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 00:23:32,165 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 00:23:32,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 00:23:32,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 00:23:32,166 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 00:23:32,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 00:23:32,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 00:23:32,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 00:23:32,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 00:23:32,421 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 00:23:32,422 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 00:23:32,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c [2023-12-22 00:23:33,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 00:23:34,177 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 00:23:34,178 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c [2023-12-22 00:23:34,218 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350395dfe/76dd96af4b1348338cdf457c9e310f45/FLAGb43dbf97d [2023-12-22 00:23:34,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350395dfe/76dd96af4b1348338cdf457c9e310f45 [2023-12-22 00:23:34,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 00:23:34,237 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 00:23:34,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 00:23:34,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 00:23:34,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 00:23:34,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:23:34" (1/1) ... [2023-12-22 00:23:34,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a3ceae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:34, skipping insertion in model container [2023-12-22 00:23:34,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:23:34" (1/1) ... [2023-12-22 00:23:34,385 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 00:23:34,761 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c[8616,8629] [2023-12-22 00:23:34,785 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c[9458,9471] [2023-12-22 00:23:35,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 00:23:35,539 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 00:23:35,574 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c[8616,8629] [2023-12-22 00:23:35,578 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c[9458,9471] [2023-12-22 00:23:36,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 00:23:36,043 INFO L206 MainTranslator]: Completed translation [2023-12-22 00:23:36,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36 WrapperNode [2023-12-22 00:23:36,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 00:23:36,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 00:23:36,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 00:23:36,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 00:23:36,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,329 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5013 [2023-12-22 00:23:36,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 00:23:36,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 00:23:36,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 00:23:36,330 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 00:23:36,340 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,455 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 00:23:36,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,553 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 00:23:36,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 00:23:36,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 00:23:36,626 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 00:23:36,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (1/1) ... [2023-12-22 00:23:36,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 00:23:36,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 00:23:36,657 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 00:23:36,678 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 00:23:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 00:23:36,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 00:23:36,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 00:23:36,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 00:23:36,793 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 00:23:36,795 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 00:24:01,366 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 00:24:01,426 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 00:24:01,426 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-22 00:24:01,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:24:01 BoogieIcfgContainer [2023-12-22 00:24:01,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 00:24:01,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 00:24:01,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 00:24:01,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 00:24:01,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:23:34" (1/3) ... [2023-12-22 00:24:01,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341b2ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:24:01, skipping insertion in model container [2023-12-22 00:24:01,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:36" (2/3) ... [2023-12-22 00:24:01,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341b2ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:24:01, skipping insertion in model container [2023-12-22 00:24:01,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:24:01" (3/3) ... [2023-12-22 00:24:01,434 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c [2023-12-22 00:24:01,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 00:24:01,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 00:24:01,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 00:24:01,519 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;@759d6870, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 00:24:01,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 00:24:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 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 00:24:01,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-22 00:24:01,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:01,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-22 00:24:01,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:01,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1261376389, now seen corresponding path program 1 times [2023-12-22 00:24:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:01,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596281930] [2023-12-22 00:24:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:01,554 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 00:24:01,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:01,558 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 00:24:01,564 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 (2)] Waiting until timeout for monitored process [2023-12-22 00:24:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:01,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:24:01,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:01,696 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 00:24:01,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:01,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:01,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596281930] [2023-12-22 00:24:01,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596281930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:01,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:01,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 00:24:01,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953438462] [2023-12-22 00:24:01,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:01,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:24:01,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:01,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:24:01,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:24:01,733 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 00:24:35,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:35,836 INFO L93 Difference]: Finished difference Result 2367 states and 4681 transitions. [2023-12-22 00:24:35,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:24:35,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-22 00:24:35,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:35,857 INFO L225 Difference]: With dead ends: 2367 [2023-12-22 00:24:35,857 INFO L226 Difference]: Without dead ends: 1567 [2023-12-22 00:24:35,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 00:24:35,865 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 884 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:35,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 332 Invalid, 2982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [512 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 33.8s Time] [2023-12-22 00:24:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2023-12-22 00:24:35,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1567. [2023-12-22 00:24:35,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1565 states have (on average 1.7738019169329073) internal successors, (2776), 1566 states have internal predecessors, (2776), 0 states have call successors, (0), 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 00:24:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2776 transitions. [2023-12-22 00:24:35,955 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2776 transitions. Word has length 6 [2023-12-22 00:24:35,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:35,956 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2776 transitions. [2023-12-22 00:24:35,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 00:24:35,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2776 transitions. [2023-12-22 00:24:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-22 00:24:35,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:35,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:35,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-22 00:24:36,160 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 00:24:36,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:36,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:36,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2100020186, now seen corresponding path program 1 times [2023-12-22 00:24:36,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:36,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934491717] [2023-12-22 00:24:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:36,163 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 00:24:36,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:36,164 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 00:24:36,167 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 00:24:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:36,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 00:24:36,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:36,255 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 00:24:36,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:36,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:36,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934491717] [2023-12-22 00:24:36,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934491717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:36,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:36,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 00:24:36,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928254998] [2023-12-22 00:24:36,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:36,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 00:24:36,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 00:24:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 00:24:36,258 INFO L87 Difference]: Start difference. First operand 1567 states and 2776 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 00:24:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:36,329 INFO L93 Difference]: Finished difference Result 1640 states and 2891 transitions. [2023-12-22 00:24:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 00:24:36,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-22 00:24:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:36,336 INFO L225 Difference]: With dead ends: 1640 [2023-12-22 00:24:36,336 INFO L226 Difference]: Without dead ends: 1602 [2023-12-22 00:24:36,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 00:24:36,338 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 55 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:36,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4592 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:24:36,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2023-12-22 00:24:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1567. [2023-12-22 00:24:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1565 states have (on average 1.7591054313099042) internal successors, (2753), 1566 states have internal predecessors, (2753), 0 states have call successors, (0), 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 00:24:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2753 transitions. [2023-12-22 00:24:36,371 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2753 transitions. Word has length 19 [2023-12-22 00:24:36,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:36,372 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2753 transitions. [2023-12-22 00:24:36,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 00:24:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2753 transitions. [2023-12-22 00:24:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-22 00:24:36,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:36,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:36,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 00:24:36,580 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 00:24:36,581 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:36,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:36,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1286108757, now seen corresponding path program 1 times [2023-12-22 00:24:36,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:36,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374649458] [2023-12-22 00:24:36,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:36,583 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 00:24:36,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:36,584 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 00:24:36,604 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 00:24:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:36,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:24:36,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:37,075 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 00:24:37,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:37,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:37,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374649458] [2023-12-22 00:24:37,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374649458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:37,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:37,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 00:24:37,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059706239] [2023-12-22 00:24:37,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:37,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:24:37,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:24:37,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:24:37,078 INFO L87 Difference]: Start difference. First operand 1567 states and 2753 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 00:24:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:37,249 INFO L93 Difference]: Finished difference Result 1742 states and 3033 transitions. [2023-12-22 00:24:37,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:24:37,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-22 00:24:37,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:37,258 INFO L225 Difference]: With dead ends: 1742 [2023-12-22 00:24:37,258 INFO L226 Difference]: Without dead ends: 1707 [2023-12-22 00:24:37,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:24:37,262 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 1692 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:37,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 1816 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:24:37,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2023-12-22 00:24:37,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1633. [2023-12-22 00:24:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1631 states have (on average 1.753525444512569) internal successors, (2860), 1632 states have internal predecessors, (2860), 0 states have call successors, (0), 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 00:24:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2860 transitions. [2023-12-22 00:24:37,292 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2860 transitions. Word has length 41 [2023-12-22 00:24:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:37,293 INFO L495 AbstractCegarLoop]: Abstraction has 1633 states and 2860 transitions. [2023-12-22 00:24:37,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 00:24:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2860 transitions. [2023-12-22 00:24:37,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-22 00:24:37,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:37,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:37,304 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 00:24:37,500 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 00:24:37,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:37,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1122753947, now seen corresponding path program 1 times [2023-12-22 00:24:37,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:37,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233433504] [2023-12-22 00:24:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:37,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:24:37,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:37,504 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 00:24:37,508 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 00:24:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:37,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:24:37,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:37,660 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 00:24:37,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:37,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:37,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233433504] [2023-12-22 00:24:37,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233433504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:37,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:37,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:24:37,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130758931] [2023-12-22 00:24:37,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:37,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:24:37,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:37,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:24:37,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:24:37,662 INFO L87 Difference]: Start difference. First operand 1633 states and 2860 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 00:24:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:37,706 INFO L93 Difference]: Finished difference Result 1819 states and 3158 transitions. [2023-12-22 00:24:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:24:37,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-22 00:24:37,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:37,715 INFO L225 Difference]: With dead ends: 1819 [2023-12-22 00:24:37,715 INFO L226 Difference]: Without dead ends: 1718 [2023-12-22 00:24:37,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 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 00:24:37,717 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:37,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1568 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:24:37,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2023-12-22 00:24:37,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1716. [2023-12-22 00:24:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1714 states have (on average 1.7438739789964994) internal successors, (2989), 1715 states have internal predecessors, (2989), 0 states have call successors, (0), 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 00:24:37,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2989 transitions. [2023-12-22 00:24:37,749 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2989 transitions. Word has length 43 [2023-12-22 00:24:37,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:37,750 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2989 transitions. [2023-12-22 00:24:37,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 00:24:37,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2989 transitions. [2023-12-22 00:24:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-22 00:24:37,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:37,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:37,757 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 00:24:37,956 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 00:24:37,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:37,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash -507495240, now seen corresponding path program 1 times [2023-12-22 00:24:37,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:37,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176480669] [2023-12-22 00:24:37,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:37,958 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 00:24:37,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:37,959 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 00:24:37,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 00:24:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:38,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 00:24:38,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:38,068 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 00:24:38,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:38,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:38,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176480669] [2023-12-22 00:24:38,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176480669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:38,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:38,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 00:24:38,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249614218] [2023-12-22 00:24:38,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:38,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 00:24:38,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:38,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 00:24:38,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 00:24:38,071 INFO L87 Difference]: Start difference. First operand 1716 states and 2989 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 00:24:38,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:38,156 INFO L93 Difference]: Finished difference Result 1730 states and 3006 transitions. [2023-12-22 00:24:38,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 00:24:38,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-22 00:24:38,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:38,163 INFO L225 Difference]: With dead ends: 1730 [2023-12-22 00:24:38,163 INFO L226 Difference]: Without dead ends: 1728 [2023-12-22 00:24:38,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 00:24:38,164 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:38,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:24:38,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2023-12-22 00:24:38,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1724. [2023-12-22 00:24:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1722 states have (on average 1.7398373983739837) internal successors, (2996), 1723 states have internal predecessors, (2996), 0 states have call successors, (0), 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 00:24:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2996 transitions. [2023-12-22 00:24:38,196 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2996 transitions. Word has length 44 [2023-12-22 00:24:38,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:38,197 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2996 transitions. [2023-12-22 00:24:38,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 00:24:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2996 transitions. [2023-12-22 00:24:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-22 00:24:38,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:38,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:38,211 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 (6)] Forceful destruction successful, exit code 0 [2023-12-22 00:24:38,407 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 00:24:38,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:38,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:38,408 INFO L85 PathProgramCache]: Analyzing trace with hash 106172317, now seen corresponding path program 1 times [2023-12-22 00:24:38,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:38,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957260612] [2023-12-22 00:24:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:38,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:24:38,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:38,410 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 00:24:38,411 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 00:24:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:38,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:24:38,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:38,520 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 00:24:38,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:38,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:38,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957260612] [2023-12-22 00:24:38,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957260612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:38,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:38,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:24:38,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080214233] [2023-12-22 00:24:38,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:38,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:24:38,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:38,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:24:38,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:24:38,522 INFO L87 Difference]: Start difference. First operand 1724 states and 2996 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:24:38,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:38,556 INFO L93 Difference]: Finished difference Result 1928 states and 3316 transitions. [2023-12-22 00:24:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:24:38,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-22 00:24:38,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:38,562 INFO L225 Difference]: With dead ends: 1928 [2023-12-22 00:24:38,563 INFO L226 Difference]: Without dead ends: 1821 [2023-12-22 00:24:38,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 00:24:38,564 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:38,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:24:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2023-12-22 00:24:38,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1819. [2023-12-22 00:24:38,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1817 states have (on average 1.7292239955971382) internal successors, (3142), 1818 states have internal predecessors, (3142), 0 states have call successors, (0), 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 00:24:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 3142 transitions. [2023-12-22 00:24:38,596 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 3142 transitions. Word has length 45 [2023-12-22 00:24:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:38,597 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 3142 transitions. [2023-12-22 00:24:38,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:24:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 3142 transitions. [2023-12-22 00:24:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-22 00:24:38,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:38,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:38,601 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 00:24:38,801 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 00:24:38,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:38,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:38,802 INFO L85 PathProgramCache]: Analyzing trace with hash -479539811, now seen corresponding path program 1 times [2023-12-22 00:24:38,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:38,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518188334] [2023-12-22 00:24:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:38,804 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 00:24:38,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:38,805 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 00:24:38,835 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 00:24:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:38,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:24:38,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:38,912 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 00:24:38,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:38,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:38,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518188334] [2023-12-22 00:24:38,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518188334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:38,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:38,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:24:38,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800136853] [2023-12-22 00:24:38,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:38,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:24:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:38,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:24:38,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:24:38,914 INFO L87 Difference]: Start difference. First operand 1819 states and 3142 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:24:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:38,949 INFO L93 Difference]: Finished difference Result 2353 states and 3965 transitions. [2023-12-22 00:24:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:24:38,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-22 00:24:38,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:38,957 INFO L225 Difference]: With dead ends: 2353 [2023-12-22 00:24:38,958 INFO L226 Difference]: Without dead ends: 2068 [2023-12-22 00:24:38,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 00:24:38,959 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:38,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:24:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2023-12-22 00:24:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2066. [2023-12-22 00:24:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 2064 states have (on average 1.7015503875968991) internal successors, (3512), 2065 states have internal predecessors, (3512), 0 states have call successors, (0), 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 00:24:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 3512 transitions. [2023-12-22 00:24:39,003 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 3512 transitions. Word has length 45 [2023-12-22 00:24:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:39,003 INFO L495 AbstractCegarLoop]: Abstraction has 2066 states and 3512 transitions. [2023-12-22 00:24:39,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:24:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 3512 transitions. [2023-12-22 00:24:39,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-22 00:24:39,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:39,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:39,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 00:24:39,207 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 00:24:39,207 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:39,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:39,208 INFO L85 PathProgramCache]: Analyzing trace with hash 409193629, now seen corresponding path program 1 times [2023-12-22 00:24:39,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:39,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075661987] [2023-12-22 00:24:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:39,208 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 00:24:39,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:39,211 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 00:24:39,243 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 00:24:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:39,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:24:39,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:39,343 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 00:24:39,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:39,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:39,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075661987] [2023-12-22 00:24:39,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075661987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:39,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:39,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:24:39,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774228178] [2023-12-22 00:24:39,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:39,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:24:39,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:39,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:24:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:24:39,346 INFO L87 Difference]: Start difference. First operand 2066 states and 3512 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:24:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:39,393 INFO L93 Difference]: Finished difference Result 3058 states and 5012 transitions. [2023-12-22 00:24:39,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:24:39,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-22 00:24:39,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:39,402 INFO L225 Difference]: With dead ends: 3058 [2023-12-22 00:24:39,403 INFO L226 Difference]: Without dead ends: 2526 [2023-12-22 00:24:39,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 00:24:39,405 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:39,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:24:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2023-12-22 00:24:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2524. [2023-12-22 00:24:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2522 states have (on average 1.6574147501982555) internal successors, (4180), 2523 states have internal predecessors, (4180), 0 states have call successors, (0), 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 00:24:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 4180 transitions. [2023-12-22 00:24:39,460 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 4180 transitions. Word has length 45 [2023-12-22 00:24:39,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:39,461 INFO L495 AbstractCegarLoop]: Abstraction has 2524 states and 4180 transitions. [2023-12-22 00:24:39,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:24:39,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 4180 transitions. [2023-12-22 00:24:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-22 00:24:39,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:39,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:39,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-22 00:24:39,670 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 00:24:39,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:39,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:39,671 INFO L85 PathProgramCache]: Analyzing trace with hash 146116253, now seen corresponding path program 1 times [2023-12-22 00:24:39,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:39,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794629666] [2023-12-22 00:24:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:39,672 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 00:24:39,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:39,673 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 00:24:39,675 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 00:24:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:39,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:24:39,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:39,795 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 00:24:39,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:39,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:39,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794629666] [2023-12-22 00:24:39,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794629666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:39,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:39,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:24:39,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010138314] [2023-12-22 00:24:39,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:39,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:24:39,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:39,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:24:39,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:24:39,797 INFO L87 Difference]: Start difference. First operand 2524 states and 4180 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:24:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:39,856 INFO L93 Difference]: Finished difference Result 4360 states and 6890 transitions. [2023-12-22 00:24:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:24:39,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-22 00:24:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:39,869 INFO L225 Difference]: With dead ends: 4360 [2023-12-22 00:24:39,869 INFO L226 Difference]: Without dead ends: 3370 [2023-12-22 00:24:39,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 00:24:39,872 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:39,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:24:39,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2023-12-22 00:24:39,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3368. [2023-12-22 00:24:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 3366 states have (on average 1.595959595959596) internal successors, (5372), 3367 states have internal predecessors, (5372), 0 states have call successors, (0), 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 00:24:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 5372 transitions. [2023-12-22 00:24:39,951 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 5372 transitions. Word has length 45 [2023-12-22 00:24:39,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:39,951 INFO L495 AbstractCegarLoop]: Abstraction has 3368 states and 5372 transitions. [2023-12-22 00:24:39,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:24:39,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 5372 transitions. [2023-12-22 00:24:39,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-22 00:24:39,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:39,953 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 00:24:39,958 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 00:24:40,155 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 00:24:40,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:40,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:40,156 INFO L85 PathProgramCache]: Analyzing trace with hash -471056874, now seen corresponding path program 1 times [2023-12-22 00:24:40,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:40,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872412192] [2023-12-22 00:24:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:40,157 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 00:24:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:40,162 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 00:24:40,194 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 00:24:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:40,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 00:24:40,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:41,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:24:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:41,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:41,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872412192] [2023-12-22 00:24:41,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872412192] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:24:41,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:24:41,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 00:24:41,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554859478] [2023-12-22 00:24:41,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:24:41,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 00:24:41,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 00:24:41,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 00:24:41,644 INFO L87 Difference]: Start difference. First operand 3368 states and 5372 transitions. Second operand has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:24:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:44,004 INFO L93 Difference]: Finished difference Result 7418 states and 11193 transitions. [2023-12-22 00:24:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 00:24:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-22 00:24:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:44,025 INFO L225 Difference]: With dead ends: 7418 [2023-12-22 00:24:44,025 INFO L226 Difference]: Without dead ends: 6120 [2023-12-22 00:24:44,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-22 00:24:44,071 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1856 mSDsluCounter, 13704 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 15225 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:44,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 15225 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 00:24:44,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6120 states. [2023-12-22 00:24:44,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6120 to 5200. [2023-12-22 00:24:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 5198 states have (on average 1.5429011158137744) internal successors, (8020), 5199 states have internal predecessors, (8020), 0 states have call successors, (0), 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 00:24:44,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 8020 transitions. [2023-12-22 00:24:44,215 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 8020 transitions. Word has length 61 [2023-12-22 00:24:44,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:44,216 INFO L495 AbstractCegarLoop]: Abstraction has 5200 states and 8020 transitions. [2023-12-22 00:24:44,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:24:44,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 8020 transitions. [2023-12-22 00:24:44,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-22 00:24:44,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:44,217 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 00:24:44,224 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 00:24:44,421 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 00:24:44,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:44,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1056769002, now seen corresponding path program 1 times [2023-12-22 00:24:44,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:44,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411348189] [2023-12-22 00:24:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:44,423 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 00:24:44,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:44,424 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 00:24:44,453 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 00:24:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:44,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:24:44,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:44,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:44,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411348189] [2023-12-22 00:24:44,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411348189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:44,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:44,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:24:44,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496244609] [2023-12-22 00:24:44,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:44,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:24:44,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:44,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:24:44,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:24:44,542 INFO L87 Difference]: Start difference. First operand 5200 states and 8020 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 00:24:44,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:44,631 INFO L93 Difference]: Finished difference Result 7812 states and 11855 transitions. [2023-12-22 00:24:44,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:24:44,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-22 00:24:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:44,657 INFO L225 Difference]: With dead ends: 7812 [2023-12-22 00:24:44,657 INFO L226 Difference]: Without dead ends: 4146 [2023-12-22 00:24:44,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 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 00:24:44,663 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 39 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:44,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3059 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:24:44,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2023-12-22 00:24:44,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 4139. [2023-12-22 00:24:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4139 states, 4137 states have (on average 1.566110708242688) internal successors, (6479), 4138 states have internal predecessors, (6479), 0 states have call successors, (0), 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 00:24:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4139 states to 4139 states and 6479 transitions. [2023-12-22 00:24:44,793 INFO L78 Accepts]: Start accepts. Automaton has 4139 states and 6479 transitions. Word has length 61 [2023-12-22 00:24:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:44,793 INFO L495 AbstractCegarLoop]: Abstraction has 4139 states and 6479 transitions. [2023-12-22 00:24:44,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 00:24:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4139 states and 6479 transitions. [2023-12-22 00:24:44,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-22 00:24:44,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:44,795 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 00:24:44,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-22 00:24:45,003 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 00:24:45,003 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:45,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:45,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1640894742, now seen corresponding path program 1 times [2023-12-22 00:24:45,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:45,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835712282] [2023-12-22 00:24:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:45,004 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 00:24:45,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:45,006 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 00:24:45,008 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 00:24:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:45,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:24:45,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:45,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:45,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:45,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835712282] [2023-12-22 00:24:45,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835712282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:45,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:45,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:24:45,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899961666] [2023-12-22 00:24:45,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:45,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:24:45,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:45,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:24:45,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:24:45,146 INFO L87 Difference]: Start difference. First operand 4139 states and 6479 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 00:24:45,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:45,210 INFO L93 Difference]: Finished difference Result 5439 states and 8365 transitions. [2023-12-22 00:24:45,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:24:45,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-22 00:24:45,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:45,217 INFO L225 Difference]: With dead ends: 5439 [2023-12-22 00:24:45,217 INFO L226 Difference]: Without dead ends: 2845 [2023-12-22 00:24:45,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 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 00:24:45,221 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 35 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:45,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3044 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:24:45,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2023-12-22 00:24:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2843. [2023-12-22 00:24:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2843 states, 2841 states have (on average 1.608940513903555) internal successors, (4571), 2842 states have internal predecessors, (4571), 0 states have call successors, (0), 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 00:24:45,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 4571 transitions. [2023-12-22 00:24:45,279 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 4571 transitions. Word has length 63 [2023-12-22 00:24:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:45,280 INFO L495 AbstractCegarLoop]: Abstraction has 2843 states and 4571 transitions. [2023-12-22 00:24:45,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 00:24:45,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 4571 transitions. [2023-12-22 00:24:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-22 00:24:45,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:45,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:45,287 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 00:24:45,484 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 00:24:45,484 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:45,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash 967237868, now seen corresponding path program 1 times [2023-12-22 00:24:45,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:45,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672134102] [2023-12-22 00:24:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:45,485 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 00:24:45,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:45,487 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 00:24:45,498 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 00:24:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:45,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 00:24:45,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:46,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:24:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:46,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:46,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672134102] [2023-12-22 00:24:46,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672134102] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:24:46,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:24:46,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 00:24:46,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856332311] [2023-12-22 00:24:46,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:24:46,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 00:24:46,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:46,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 00:24:46,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 00:24:46,695 INFO L87 Difference]: Start difference. First operand 2843 states and 4571 transitions. Second operand has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:24:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:47,797 INFO L93 Difference]: Finished difference Result 6475 states and 9711 transitions. [2023-12-22 00:24:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 00:24:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-22 00:24:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:47,804 INFO L225 Difference]: With dead ends: 6475 [2023-12-22 00:24:47,805 INFO L226 Difference]: Without dead ends: 5177 [2023-12-22 00:24:47,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 00:24:47,808 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1904 mSDsluCounter, 7674 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 9231 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:47,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1904 Valid, 9231 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 00:24:47,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5177 states. [2023-12-22 00:24:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5177 to 4283. [2023-12-22 00:24:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4283 states, 4281 states have (on average 1.5302499416024293) internal successors, (6551), 4282 states have internal predecessors, (6551), 0 states have call successors, (0), 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 00:24:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 6551 transitions. [2023-12-22 00:24:47,915 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 6551 transitions. Word has length 64 [2023-12-22 00:24:47,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:47,916 INFO L495 AbstractCegarLoop]: Abstraction has 4283 states and 6551 transitions. [2023-12-22 00:24:47,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:24:47,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 6551 transitions. [2023-12-22 00:24:47,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 00:24:47,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:47,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:47,927 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 00:24:48,120 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 00:24:48,121 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:48,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:48,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1206556788, now seen corresponding path program 1 times [2023-12-22 00:24:48,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:48,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42985224] [2023-12-22 00:24:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:48,122 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 00:24:48,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:48,123 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 00:24:48,124 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 00:24:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:48,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:24:48,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:48,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:48,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:48,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42985224] [2023-12-22 00:24:48,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42985224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:48,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:48,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:24:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538742207] [2023-12-22 00:24:48,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:48,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:24:48,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:48,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:24:48,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:24:48,226 INFO L87 Difference]: Start difference. First operand 4283 states and 6551 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 00:24:48,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:48,298 INFO L93 Difference]: Finished difference Result 5655 states and 8473 transitions. [2023-12-22 00:24:48,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:24:48,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-22 00:24:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:48,303 INFO L225 Difference]: With dead ends: 5655 [2023-12-22 00:24:48,304 INFO L226 Difference]: Without dead ends: 2917 [2023-12-22 00:24:48,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 00:24:48,307 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 31 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:48,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:24:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2023-12-22 00:24:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2915. [2023-12-22 00:24:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2913 states have (on average 1.581531067627875) internal successors, (4607), 2914 states have internal predecessors, (4607), 0 states have call successors, (0), 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 00:24:48,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 4607 transitions. [2023-12-22 00:24:48,368 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 4607 transitions. Word has length 66 [2023-12-22 00:24:48,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:48,368 INFO L495 AbstractCegarLoop]: Abstraction has 2915 states and 4607 transitions. [2023-12-22 00:24:48,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 00:24:48,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 4607 transitions. [2023-12-22 00:24:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-22 00:24:48,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:48,369 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 00:24:48,379 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 00:24:48,579 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 00:24:48,579 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:48,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:48,579 INFO L85 PathProgramCache]: Analyzing trace with hash 921156490, now seen corresponding path program 1 times [2023-12-22 00:24:48,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:48,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174605781] [2023-12-22 00:24:48,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:48,580 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 00:24:48,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:48,581 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 00:24:48,582 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 00:24:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:48,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 00:24:48,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:49,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:24:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:49,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:49,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174605781] [2023-12-22 00:24:49,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174605781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:24:49,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:24:49,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 00:24:49,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31173772] [2023-12-22 00:24:49,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:24:49,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 00:24:49,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 00:24:49,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 00:24:49,670 INFO L87 Difference]: Start difference. First operand 2915 states and 4607 transitions. Second operand has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:24:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:50,703 INFO L93 Difference]: Finished difference Result 6547 states and 9579 transitions. [2023-12-22 00:24:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 00:24:50,703 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-22 00:24:50,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:50,711 INFO L225 Difference]: With dead ends: 6547 [2023-12-22 00:24:50,711 INFO L226 Difference]: Without dead ends: 5177 [2023-12-22 00:24:50,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 00:24:50,715 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 6449 mSDsluCounter, 9098 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6449 SdHoareTripleChecker+Valid, 10637 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:50,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6449 Valid, 10637 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 00:24:50,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5177 states. [2023-12-22 00:24:50,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5177 to 4427. [2023-12-22 00:24:50,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4425 states have (on average 1.496723163841808) internal successors, (6623), 4426 states have internal predecessors, (6623), 0 states have call successors, (0), 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 00:24:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 6623 transitions. [2023-12-22 00:24:50,885 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 6623 transitions. Word has length 67 [2023-12-22 00:24:50,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:50,885 INFO L495 AbstractCegarLoop]: Abstraction has 4427 states and 6623 transitions. [2023-12-22 00:24:50,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:24:50,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 6623 transitions. [2023-12-22 00:24:50,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-22 00:24:50,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:50,886 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 00:24:50,893 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 00:24:51,089 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 00:24:51,090 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:51,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:51,090 INFO L85 PathProgramCache]: Analyzing trace with hash 186427638, now seen corresponding path program 1 times [2023-12-22 00:24:51,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:51,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108064857] [2023-12-22 00:24:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:51,091 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 00:24:51,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:51,092 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 00:24:51,093 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 00:24:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:51,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:24:51,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:51,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:51,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:51,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108064857] [2023-12-22 00:24:51,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108064857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:51,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:51,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:24:51,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506733280] [2023-12-22 00:24:51,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:51,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:24:51,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:51,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:24:51,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:24:51,208 INFO L87 Difference]: Start difference. First operand 4427 states and 6623 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 00:24:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:51,278 INFO L93 Difference]: Finished difference Result 5805 states and 8482 transitions. [2023-12-22 00:24:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:24:51,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-22 00:24:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:51,283 INFO L225 Difference]: With dead ends: 5805 [2023-12-22 00:24:51,283 INFO L226 Difference]: Without dead ends: 2923 [2023-12-22 00:24:51,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 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 00:24:51,287 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 27 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:51,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 00:24:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2023-12-22 00:24:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2921. [2023-12-22 00:24:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2921 states, 2919 states have (on average 1.5570400822199384) internal successors, (4545), 2920 states have internal predecessors, (4545), 0 states have call successors, (0), 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 00:24:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4545 transitions. [2023-12-22 00:24:51,354 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4545 transitions. Word has length 69 [2023-12-22 00:24:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:51,354 INFO L495 AbstractCegarLoop]: Abstraction has 2921 states and 4545 transitions. [2023-12-22 00:24:51,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 00:24:51,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4545 transitions. [2023-12-22 00:24:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-22 00:24:51,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:51,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:51,361 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 00:24:51,558 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 00:24:51,559 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:51,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:51,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2042734176, now seen corresponding path program 1 times [2023-12-22 00:24:51,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:51,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342291522] [2023-12-22 00:24:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:51,560 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 00:24:51,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:51,561 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 00:24:51,561 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 (18)] Waiting until timeout for monitored process [2023-12-22 00:24:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:51,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 00:24:51,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:52,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:52,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:24:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:52,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:52,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342291522] [2023-12-22 00:24:52,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342291522] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:24:52,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:24:52,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 00:24:52,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836344869] [2023-12-22 00:24:52,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:24:52,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 00:24:52,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:52,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 00:24:52,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 00:24:52,714 INFO L87 Difference]: Start difference. First operand 2921 states and 4545 transitions. Second operand has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 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 00:24:54,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:24:54,000 INFO L93 Difference]: Finished difference Result 5531 states and 7976 transitions. [2023-12-22 00:24:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 00:24:54,000 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 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 70 [2023-12-22 00:24:54,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:24:54,005 INFO L225 Difference]: With dead ends: 5531 [2023-12-22 00:24:54,005 INFO L226 Difference]: Without dead ends: 4155 [2023-12-22 00:24:54,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-22 00:24:54,007 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 3268 mSDsluCounter, 12047 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3268 SdHoareTripleChecker+Valid, 13568 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 00:24:54,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3268 Valid, 13568 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 00:24:54,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4155 states. [2023-12-22 00:24:54,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4155 to 3905. [2023-12-22 00:24:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3905 states, 3903 states have (on average 1.485523955931335) internal successors, (5798), 3904 states have internal predecessors, (5798), 0 states have call successors, (0), 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 00:24:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 5798 transitions. [2023-12-22 00:24:54,134 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 5798 transitions. Word has length 70 [2023-12-22 00:24:54,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:24:54,135 INFO L495 AbstractCegarLoop]: Abstraction has 3905 states and 5798 transitions. [2023-12-22 00:24:54,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 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 00:24:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 5798 transitions. [2023-12-22 00:24:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-22 00:24:54,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:24:54,136 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:24:54,143 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 00:24:54,339 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 00:24:54,340 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:24:54,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:24:54,341 INFO L85 PathProgramCache]: Analyzing trace with hash 515566641, now seen corresponding path program 1 times [2023-12-22 00:24:54,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:24:54,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825610752] [2023-12-22 00:24:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:24:54,341 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 00:24:54,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:24:54,342 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 00:24:54,344 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 00:24:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:24:54,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:24:54,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:24:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:24:54,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:24:54,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:24:54,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825610752] [2023-12-22 00:24:54,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825610752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:24:54,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:24:54,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 00:24:54,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626545133] [2023-12-22 00:24:54,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:24:54,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:24:54,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:24:54,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:24:54,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:24:54,552 INFO L87 Difference]: Start difference. First operand 3905 states and 5798 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 00:25:39,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:25:39,034 INFO L93 Difference]: Finished difference Result 6911 states and 11133 transitions. [2023-12-22 00:25:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:25:39,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-22 00:25:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:25:39,055 INFO L225 Difference]: With dead ends: 6911 [2023-12-22 00:25:39,055 INFO L226 Difference]: Without dead ends: 5407 [2023-12-22 00:25:39,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 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 00:25:39,058 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 816 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.3s IncrementalHoareTripleChecker+Time [2023-12-22 00:25:39,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 592 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 44.3s Time] [2023-12-22 00:25:39,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2023-12-22 00:25:39,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 5407. [2023-12-22 00:25:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5407 states, 5405 states have (on average 1.4371877890841813) internal successors, (7768), 5406 states have internal predecessors, (7768), 0 states have call successors, (0), 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 00:25:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 7768 transitions. [2023-12-22 00:25:39,179 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 7768 transitions. Word has length 71 [2023-12-22 00:25:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:25:39,179 INFO L495 AbstractCegarLoop]: Abstraction has 5407 states and 7768 transitions. [2023-12-22 00:25:39,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 00:25:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 7768 transitions. [2023-12-22 00:25:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-22 00:25:39,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:25:39,180 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:25:39,184 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 00:25:39,384 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 00:25:39,385 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:25:39,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:25:39,385 INFO L85 PathProgramCache]: Analyzing trace with hash -641536104, now seen corresponding path program 1 times [2023-12-22 00:25:39,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:25:39,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109554331] [2023-12-22 00:25:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:25:39,386 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 00:25:39,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:25:39,387 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 00:25:39,388 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 00:25:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:25:39,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 00:25:39,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:25:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 00:25:39,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:25:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 00:25:39,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:25:39,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109554331] [2023-12-22 00:25:39,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109554331] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:25:39,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:25:39,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 00:25:39,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094313801] [2023-12-22 00:25:39,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:25:39,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:25:39,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:25:39,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:25:39,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:25:39,747 INFO L87 Difference]: Start difference. First operand 5407 states and 7768 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 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 00:25:40,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:25:40,063 INFO L93 Difference]: Finished difference Result 12167 states and 16424 transitions. [2023-12-22 00:25:40,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:25:40,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 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 72 [2023-12-22 00:25:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:25:40,075 INFO L225 Difference]: With dead ends: 12167 [2023-12-22 00:25:40,075 INFO L226 Difference]: Without dead ends: 9807 [2023-12-22 00:25:40,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-22 00:25:40,079 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 2992 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2992 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:25:40,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2992 Valid, 3187 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:25:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9807 states. [2023-12-22 00:25:40,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9807 to 9601. [2023-12-22 00:25:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9601 states, 9599 states have (on average 1.3307636212105427) internal successors, (12774), 9600 states have internal predecessors, (12774), 0 states have call successors, (0), 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 00:25:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9601 states to 9601 states and 12774 transitions. [2023-12-22 00:25:40,375 INFO L78 Accepts]: Start accepts. Automaton has 9601 states and 12774 transitions. Word has length 72 [2023-12-22 00:25:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:25:40,376 INFO L495 AbstractCegarLoop]: Abstraction has 9601 states and 12774 transitions. [2023-12-22 00:25:40,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 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 00:25:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 9601 states and 12774 transitions. [2023-12-22 00:25:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-22 00:25:40,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:25:40,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:25:40,380 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 00:25:40,577 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 00:25:40,577 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:25:40,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:25:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash -823677470, now seen corresponding path program 1 times [2023-12-22 00:25:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:25:40,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936374445] [2023-12-22 00:25:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:25:40,578 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 00:25:40,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:25:40,580 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 00:25:40,580 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 00:25:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:25:40,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:25:40,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:25:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:25:40,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:25:40,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:25:40,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936374445] [2023-12-22 00:25:40,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936374445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:25:40,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:25:40,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:25:40,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059687690] [2023-12-22 00:25:40,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:25:40,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:25:40,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:25:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:25:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:25:40,657 INFO L87 Difference]: Start difference. First operand 9601 states and 12774 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 00:26:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:26:24,400 INFO L93 Difference]: Finished difference Result 14109 states and 19875 transitions. [2023-12-22 00:26:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:26:24,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-22 00:26:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:26:24,412 INFO L225 Difference]: With dead ends: 14109 [2023-12-22 00:26:24,412 INFO L226 Difference]: Without dead ends: 11103 [2023-12-22 00:26:24,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 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 00:26:24,417 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 784 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.4s IncrementalHoareTripleChecker+Time [2023-12-22 00:26:24,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1258 Invalid, 3084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 43.4s Time] [2023-12-22 00:26:24,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11103 states. [2023-12-22 00:26:24,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11103 to 11103. [2023-12-22 00:26:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11103 states, 11101 states have (on average 1.3449238807314656) internal successors, (14930), 11102 states have internal predecessors, (14930), 0 states have call successors, (0), 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 00:26:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11103 states to 11103 states and 14930 transitions. [2023-12-22 00:26:24,696 INFO L78 Accepts]: Start accepts. Automaton has 11103 states and 14930 transitions. Word has length 77 [2023-12-22 00:26:24,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:26:24,696 INFO L495 AbstractCegarLoop]: Abstraction has 11103 states and 14930 transitions. [2023-12-22 00:26:24,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 00:26:24,696 INFO L276 IsEmpty]: Start isEmpty. Operand 11103 states and 14930 transitions. [2023-12-22 00:26:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 00:26:24,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:26:24,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:26:24,702 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 00:26:24,901 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 00:26:24,901 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:26:24,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:26:24,902 INFO L85 PathProgramCache]: Analyzing trace with hash -869533608, now seen corresponding path program 1 times [2023-12-22 00:26:24,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:26:24,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835385894] [2023-12-22 00:26:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:26:24,902 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 00:26:24,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:26:24,904 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 00:26:24,908 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 00:26:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:26:24,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:26:24,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:26:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:26:25,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:26:25,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:26:25,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835385894] [2023-12-22 00:26:25,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835385894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:26:25,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:26:25,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 00:26:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513031003] [2023-12-22 00:26:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:26:25,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:26:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:26:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:26:25,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:26:25,135 INFO L87 Difference]: Start difference. First operand 11103 states and 14930 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 00:27:05,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:05,020 INFO L93 Difference]: Finished difference Result 20119 states and 28518 transitions. [2023-12-22 00:27:05,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:27:05,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-12-22 00:27:05,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:05,047 INFO L225 Difference]: With dead ends: 20119 [2023-12-22 00:27:05,047 INFO L226 Difference]: Without dead ends: 15611 [2023-12-22 00:27:05,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 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 00:27:05,059 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 999 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.5s IncrementalHoareTripleChecker+Time [2023-12-22 00:27:05,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 434 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 39.5s Time] [2023-12-22 00:27:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15611 states. [2023-12-22 00:27:05,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15611 to 15609. [2023-12-22 00:27:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15609 states, 15607 states have (on average 1.3226757224322419) internal successors, (20643), 15608 states have internal predecessors, (20643), 0 states have call successors, (0), 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 00:27:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15609 states to 15609 states and 20643 transitions. [2023-12-22 00:27:05,415 INFO L78 Accepts]: Start accepts. Automaton has 15609 states and 20643 transitions. Word has length 81 [2023-12-22 00:27:05,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:05,415 INFO L495 AbstractCegarLoop]: Abstraction has 15609 states and 20643 transitions. [2023-12-22 00:27:05,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 00:27:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 15609 states and 20643 transitions. [2023-12-22 00:27:05,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-22 00:27:05,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:05,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:27:05,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-22 00:27:05,618 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 00:27:05,619 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:05,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1226606364, now seen corresponding path program 1 times [2023-12-22 00:27:05,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:05,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88790613] [2023-12-22 00:27:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:05,620 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 00:27:05,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:05,621 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 00:27:05,622 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 00:27:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:05,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:27:05,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:05,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:27:05,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:05,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88790613] [2023-12-22 00:27:05,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88790613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:27:05,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:27:05,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 00:27:05,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143462150] [2023-12-22 00:27:05,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:27:05,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:27:05,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:05,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:27:05,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:27:05,911 INFO L87 Difference]: Start difference. First operand 15609 states and 20643 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 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 00:27:50,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:50,057 INFO L93 Difference]: Finished difference Result 30631 states and 41793 transitions. [2023-12-22 00:27:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:27:50,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-22 00:27:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:50,084 INFO L225 Difference]: With dead ends: 30631 [2023-12-22 00:27:50,084 INFO L226 Difference]: Without dead ends: 21617 [2023-12-22 00:27:50,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 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 00:27:50,094 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 783 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 2954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.7s IncrementalHoareTripleChecker+Time [2023-12-22 00:27:50,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 680 Invalid, 2954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 43.7s Time] [2023-12-22 00:27:50,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21617 states. [2023-12-22 00:27:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21617 to 21617. [2023-12-22 00:27:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21617 states, 21615 states have (on average 1.275734443673375) internal successors, (27575), 21616 states have internal predecessors, (27575), 0 states have call successors, (0), 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 00:27:50,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21617 states to 21617 states and 27575 transitions. [2023-12-22 00:27:50,525 INFO L78 Accepts]: Start accepts. Automaton has 21617 states and 27575 transitions. Word has length 105 [2023-12-22 00:27:50,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:50,525 INFO L495 AbstractCegarLoop]: Abstraction has 21617 states and 27575 transitions. [2023-12-22 00:27:50,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 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 00:27:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 21617 states and 27575 transitions. [2023-12-22 00:27:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-22 00:27:50,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:50,529 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:27:50,536 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 00:27:50,733 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 00:27:50,733 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:50,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash -994143162, now seen corresponding path program 1 times [2023-12-22 00:27:50,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:50,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785589732] [2023-12-22 00:27:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:50,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:27:50,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:50,736 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 00:27:50,737 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 00:27:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:50,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 00:27:50,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:52,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:27:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:53,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:53,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785589732] [2023-12-22 00:27:53,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785589732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:27:53,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:27:53,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 00:27:53,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480188926] [2023-12-22 00:27:53,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:27:53,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:27:53,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:53,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:27:53,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:27:53,007 INFO L87 Difference]: Start difference. First operand 21617 states and 27575 transitions. Second operand has 26 states, 26 states have (on average 7.769230769230769) internal successors, (202), 25 states have internal predecessors, (202), 0 states have call successors, (0), 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 00:27:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:27:55,304 INFO L93 Difference]: Finished difference Result 26005 states and 33062 transitions. [2023-12-22 00:27:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 00:27:55,305 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.769230769230769) internal successors, (202), 25 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-22 00:27:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:27:55,330 INFO L225 Difference]: With dead ends: 26005 [2023-12-22 00:27:55,330 INFO L226 Difference]: Without dead ends: 21723 [2023-12-22 00:27:55,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-22 00:27:55,340 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 18014 mSDsluCounter, 6258 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18014 SdHoareTripleChecker+Valid, 7766 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 00:27:55,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18014 Valid, 7766 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 00:27:55,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21723 states. [2023-12-22 00:27:55,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21723 to 21617. [2023-12-22 00:27:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21617 states, 21615 states have (on average 1.2706916493176035) internal successors, (27466), 21616 states have internal predecessors, (27466), 0 states have call successors, (0), 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 00:27:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21617 states to 21617 states and 27466 transitions. [2023-12-22 00:27:55,840 INFO L78 Accepts]: Start accepts. Automaton has 21617 states and 27466 transitions. Word has length 111 [2023-12-22 00:27:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:27:55,841 INFO L495 AbstractCegarLoop]: Abstraction has 21617 states and 27466 transitions. [2023-12-22 00:27:55,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.769230769230769) internal successors, (202), 25 states have internal predecessors, (202), 0 states have call successors, (0), 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 00:27:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 21617 states and 27466 transitions. [2023-12-22 00:27:55,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-22 00:27:55,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:27:55,844 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:27:55,849 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 00:27:56,049 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 00:27:56,049 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:27:56,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:27:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash -119532490, now seen corresponding path program 1 times [2023-12-22 00:27:56,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:27:56,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168544224] [2023-12-22 00:27:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:27:56,051 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 00:27:56,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:27:56,052 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 00:27:56,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-22 00:27:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:27:56,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 00:27:56,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:27:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:57,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:27:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:27:58,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:27:58,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168544224] [2023-12-22 00:27:58,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168544224] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:27:58,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:27:58,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 00:27:58,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027657641] [2023-12-22 00:27:58,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:27:58,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:27:58,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:27:58,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:27:58,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:27:58,324 INFO L87 Difference]: Start difference. First operand 21617 states and 27466 transitions. Second operand has 26 states, 26 states have (on average 8.0) internal successors, (208), 25 states have internal predecessors, (208), 0 states have call successors, (0), 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 00:28:00,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:00,971 INFO L93 Difference]: Finished difference Result 25289 states and 32029 transitions. [2023-12-22 00:28:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 00:28:00,972 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.0) internal successors, (208), 25 states have internal predecessors, (208), 0 states have call successors, (0), 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 112 [2023-12-22 00:28:00,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:00,997 INFO L225 Difference]: With dead ends: 25289 [2023-12-22 00:28:00,998 INFO L226 Difference]: Without dead ends: 22507 [2023-12-22 00:28:01,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 00:28:01,007 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 17955 mSDsluCounter, 7818 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17955 SdHoareTripleChecker+Valid, 9326 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:01,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17955 Valid, 9326 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 00:28:01,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22507 states. [2023-12-22 00:28:01,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22507 to 21617. [2023-12-22 00:28:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21617 states, 21615 states have (on average 1.2682859125607218) internal successors, (27414), 21616 states have internal predecessors, (27414), 0 states have call successors, (0), 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 00:28:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21617 states to 21617 states and 27414 transitions. [2023-12-22 00:28:01,522 INFO L78 Accepts]: Start accepts. Automaton has 21617 states and 27414 transitions. Word has length 112 [2023-12-22 00:28:01,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:01,523 INFO L495 AbstractCegarLoop]: Abstraction has 21617 states and 27414 transitions. [2023-12-22 00:28:01,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.0) internal successors, (208), 25 states have internal predecessors, (208), 0 states have call successors, (0), 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 00:28:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand 21617 states and 27414 transitions. [2023-12-22 00:28:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-22 00:28:01,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:01,526 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:28:01,530 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 00:28:01,727 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 00:28:01,728 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:01,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1925236778, now seen corresponding path program 1 times [2023-12-22 00:28:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:01,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746878499] [2023-12-22 00:28:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:01,729 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 00:28:01,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:01,730 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 00:28:01,731 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 00:28:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:01,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 00:28:01,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:03,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:04,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:04,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746878499] [2023-12-22 00:28:04,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746878499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:04,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:04,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 00:28:04,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432940763] [2023-12-22 00:28:04,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:04,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:04,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:04,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:04,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:04,060 INFO L87 Difference]: Start difference. First operand 21617 states and 27414 transitions. Second operand has 26 states, 26 states have (on average 8.23076923076923) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 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 00:28:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:06,675 INFO L93 Difference]: Finished difference Result 24791 states and 31316 transitions. [2023-12-22 00:28:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 00:28:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.23076923076923) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 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 113 [2023-12-22 00:28:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:06,701 INFO L225 Difference]: With dead ends: 24791 [2023-12-22 00:28:06,702 INFO L226 Difference]: Without dead ends: 22135 [2023-12-22 00:28:06,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 00:28:06,709 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 14872 mSDsluCounter, 9299 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14872 SdHoareTripleChecker+Valid, 10807 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:06,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14872 Valid, 10807 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 00:28:06,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22135 states. [2023-12-22 00:28:07,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22135 to 21617. [2023-12-22 00:28:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21617 states, 21615 states have (on average 1.2657876474670369) internal successors, (27360), 21616 states have internal predecessors, (27360), 0 states have call successors, (0), 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 00:28:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21617 states to 21617 states and 27360 transitions. [2023-12-22 00:28:07,178 INFO L78 Accepts]: Start accepts. Automaton has 21617 states and 27360 transitions. Word has length 113 [2023-12-22 00:28:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:07,178 INFO L495 AbstractCegarLoop]: Abstraction has 21617 states and 27360 transitions. [2023-12-22 00:28:07,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.23076923076923) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 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 00:28:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 21617 states and 27360 transitions. [2023-12-22 00:28:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-22 00:28:07,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:07,182 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:07,192 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 00:28:07,388 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 00:28:07,389 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:07,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash 657357930, now seen corresponding path program 1 times [2023-12-22 00:28:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646246802] [2023-12-22 00:28:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:07,389 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 00:28:07,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:07,390 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 00:28:07,391 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 00:28:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:07,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 00:28:07,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:09,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:09,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:09,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646246802] [2023-12-22 00:28:09,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646246802] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:09,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:09,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 00:28:09,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102767366] [2023-12-22 00:28:09,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:09,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:09,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:09,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:09,765 INFO L87 Difference]: Start difference. First operand 21617 states and 27360 transitions. Second operand has 26 states, 26 states have (on average 8.346153846153847) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 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 00:28:16,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:16,758 INFO L93 Difference]: Finished difference Result 25721 states and 32310 transitions. [2023-12-22 00:28:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 00:28:16,759 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.346153846153847) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 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 114 [2023-12-22 00:28:16,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:16,787 INFO L225 Difference]: With dead ends: 25721 [2023-12-22 00:28:16,787 INFO L226 Difference]: Without dead ends: 24551 [2023-12-22 00:28:16,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 00:28:16,797 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 5018 mSDsluCounter, 25049 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5018 SdHoareTripleChecker+Valid, 26656 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:16,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5018 Valid, 26656 Invalid, 2227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-22 00:28:16,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24551 states. [2023-12-22 00:28:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24551 to 19465. [2023-12-22 00:28:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19465 states, 19463 states have (on average 1.2732363972666085) internal successors, (24781), 19464 states have internal predecessors, (24781), 0 states have call successors, (0), 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 00:28:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19465 states to 19465 states and 24781 transitions. [2023-12-22 00:28:17,226 INFO L78 Accepts]: Start accepts. Automaton has 19465 states and 24781 transitions. Word has length 114 [2023-12-22 00:28:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:17,226 INFO L495 AbstractCegarLoop]: Abstraction has 19465 states and 24781 transitions. [2023-12-22 00:28:17,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.346153846153847) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 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 00:28:17,226 INFO L276 IsEmpty]: Start isEmpty. Operand 19465 states and 24781 transitions. [2023-12-22 00:28:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-22 00:28:17,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:17,228 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:17,237 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 00:28:17,437 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 00:28:17,438 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:17,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash 302652358, now seen corresponding path program 1 times [2023-12-22 00:28:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:17,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505720504] [2023-12-22 00:28:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:17,439 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 00:28:17,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:17,440 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 00:28:17,441 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 00:28:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:17,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 00:28:17,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:19,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:19,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:19,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505720504] [2023-12-22 00:28:19,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505720504] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:19,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:19,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 00:28:19,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066820447] [2023-12-22 00:28:19,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:19,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:19,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:19,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:19,794 INFO L87 Difference]: Start difference. First operand 19465 states and 24781 transitions. Second operand has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 26 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:28:26,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:26,444 INFO L93 Difference]: Finished difference Result 27097 states and 33813 transitions. [2023-12-22 00:28:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-22 00:28:26,444 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 26 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-22 00:28:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:26,476 INFO L225 Difference]: With dead ends: 27097 [2023-12-22 00:28:26,476 INFO L226 Difference]: Without dead ends: 24953 [2023-12-22 00:28:26,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-22 00:28:26,486 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 3586 mSDsluCounter, 23273 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3586 SdHoareTripleChecker+Valid, 24867 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:26,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3586 Valid, 24867 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-22 00:28:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24953 states. [2023-12-22 00:28:27,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24953 to 20181. [2023-12-22 00:28:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20181 states, 20179 states have (on average 1.2684969522771197) internal successors, (25597), 20180 states have internal predecessors, (25597), 0 states have call successors, (0), 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 00:28:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20181 states to 20181 states and 25597 transitions. [2023-12-22 00:28:27,160 INFO L78 Accepts]: Start accepts. Automaton has 20181 states and 25597 transitions. Word has length 114 [2023-12-22 00:28:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:27,161 INFO L495 AbstractCegarLoop]: Abstraction has 20181 states and 25597 transitions. [2023-12-22 00:28:27,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.538461538461538) internal successors, (222), 26 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:28:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 20181 states and 25597 transitions. [2023-12-22 00:28:27,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-22 00:28:27,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:27,163 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:27,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-22 00:28:27,367 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 00:28:27,367 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:27,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1851727290, now seen corresponding path program 1 times [2023-12-22 00:28:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:27,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733429457] [2023-12-22 00:28:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:27,368 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 00:28:27,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:27,369 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 00:28:27,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-22 00:28:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:27,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 00:28:27,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:28,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:29,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:29,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733429457] [2023-12-22 00:28:29,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733429457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:29,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:29,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 00:28:29,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26285835] [2023-12-22 00:28:29,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:29,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:29,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:29,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:29,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:29,447 INFO L87 Difference]: Start difference. First operand 20181 states and 25597 transitions. Second operand has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 26 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 00:28:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:36,224 INFO L93 Difference]: Finished difference Result 24186 states and 30390 transitions. [2023-12-22 00:28:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-22 00:28:36,225 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 26 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 114 [2023-12-22 00:28:36,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:36,258 INFO L225 Difference]: With dead ends: 24186 [2023-12-22 00:28:36,258 INFO L226 Difference]: Without dead ends: 22888 [2023-12-22 00:28:36,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2023-12-22 00:28:36,268 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 5077 mSDsluCounter, 20396 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5077 SdHoareTripleChecker+Valid, 22010 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:36,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5077 Valid, 22010 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-22 00:28:36,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22888 states. [2023-12-22 00:28:36,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22888 to 21216. [2023-12-22 00:28:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21216 states, 21214 states have (on average 1.2636466484397095) internal successors, (26807), 21215 states have internal predecessors, (26807), 0 states have call successors, (0), 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 00:28:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21216 states to 21216 states and 26807 transitions. [2023-12-22 00:28:36,875 INFO L78 Accepts]: Start accepts. Automaton has 21216 states and 26807 transitions. Word has length 114 [2023-12-22 00:28:36,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:36,875 INFO L495 AbstractCegarLoop]: Abstraction has 21216 states and 26807 transitions. [2023-12-22 00:28:36,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 26 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 00:28:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 21216 states and 26807 transitions. [2023-12-22 00:28:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-22 00:28:36,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:36,877 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:36,881 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 00:28:37,078 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 00:28:37,079 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:37,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1353726486, now seen corresponding path program 1 times [2023-12-22 00:28:37,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:37,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871221990] [2023-12-22 00:28:37,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:28:37,080 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 00:28:37,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:37,081 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 00:28:37,081 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 00:28:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:28:37,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 00:28:37,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:38,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:28:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:28:39,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:39,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871221990] [2023-12-22 00:28:39,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871221990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:28:39,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:28:39,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 00:28:39,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521938805] [2023-12-22 00:28:39,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:28:39,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 00:28:39,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:39,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 00:28:39,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 00:28:39,231 INFO L87 Difference]: Start difference. First operand 21216 states and 26807 transitions. Second operand has 26 states, 26 states have (on average 7.961538461538462) internal successors, (207), 26 states have internal predecessors, (207), 0 states have call successors, (0), 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 00:28:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:46,722 INFO L93 Difference]: Finished difference Result 32801 states and 40346 transitions. [2023-12-22 00:28:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-22 00:28:46,723 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.961538461538462) internal successors, (207), 26 states have internal predecessors, (207), 0 states have call successors, (0), 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 114 [2023-12-22 00:28:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:46,755 INFO L225 Difference]: With dead ends: 32801 [2023-12-22 00:28:46,755 INFO L226 Difference]: Without dead ends: 30955 [2023-12-22 00:28:46,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1371 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-22 00:28:46,763 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 5145 mSDsluCounter, 22016 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5145 SdHoareTripleChecker+Valid, 23635 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:46,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5145 Valid, 23635 Invalid, 2072 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-22 00:28:46,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30955 states. [2023-12-22 00:28:47,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30955 to 26709. [2023-12-22 00:28:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26709 states, 26707 states have (on average 1.2433444415321826) internal successors, (33206), 26708 states have internal predecessors, (33206), 0 states have call successors, (0), 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 00:28:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26709 states to 26709 states and 33206 transitions. [2023-12-22 00:28:47,700 INFO L78 Accepts]: Start accepts. Automaton has 26709 states and 33206 transitions. Word has length 114 [2023-12-22 00:28:47,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:47,701 INFO L495 AbstractCegarLoop]: Abstraction has 26709 states and 33206 transitions. [2023-12-22 00:28:47,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.961538461538462) internal successors, (207), 26 states have internal predecessors, (207), 0 states have call successors, (0), 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 00:28:47,701 INFO L276 IsEmpty]: Start isEmpty. Operand 26709 states and 33206 transitions. [2023-12-22 00:28:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-22 00:28:47,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:47,707 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:28:47,712 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 00:28:47,907 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 00:28:47,907 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:47,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2006388528, now seen corresponding path program 2 times [2023-12-22 00:28:47,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:47,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615410296] [2023-12-22 00:28:47,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:28:47,908 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 00:28:47,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:47,909 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:28:47,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-22 00:28:47,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 00:28:47,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:28:47,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:28:47,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-22 00:28:49,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:28:49,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:49,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615410296] [2023-12-22 00:28:49,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615410296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:28:49,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:28:49,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 00:28:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769472016] [2023-12-22 00:28:49,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:28:49,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:28:49,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:28:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:28:49,095 INFO L87 Difference]: Start difference. First operand 26709 states and 33206 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 00:28:50,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:50,064 INFO L93 Difference]: Finished difference Result 30113 states and 37444 transitions. [2023-12-22 00:28:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:28:50,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 158 [2023-12-22 00:28:50,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:50,100 INFO L225 Difference]: With dead ends: 30113 [2023-12-22 00:28:50,100 INFO L226 Difference]: Without dead ends: 29100 [2023-12-22 00:28:50,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:28:50,108 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 4518 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4518 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:50,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4518 Valid, 3197 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:28:50,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29100 states. [2023-12-22 00:28:51,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29100 to 28377. [2023-12-22 00:28:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28377 states, 28375 states have (on average 1.238308370044053) internal successors, (35137), 28376 states have internal predecessors, (35137), 0 states have call successors, (0), 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 00:28:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28377 states to 28377 states and 35137 transitions. [2023-12-22 00:28:51,273 INFO L78 Accepts]: Start accepts. Automaton has 28377 states and 35137 transitions. Word has length 158 [2023-12-22 00:28:51,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:51,273 INFO L495 AbstractCegarLoop]: Abstraction has 28377 states and 35137 transitions. [2023-12-22 00:28:51,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 00:28:51,274 INFO L276 IsEmpty]: Start isEmpty. Operand 28377 states and 35137 transitions. [2023-12-22 00:28:51,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-22 00:28:51,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:51,280 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:28:51,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-22 00:28:51,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:28:51,481 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:51,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:51,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1933873196, now seen corresponding path program 2 times [2023-12-22 00:28:51,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:51,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109218818] [2023-12-22 00:28:51,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:28:51,482 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 00:28:51,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:51,483 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:28:51,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-22 00:28:51,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 00:28:51,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:28:51,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:28:51,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-12-22 00:28:52,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:28:52,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:52,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109218818] [2023-12-22 00:28:52,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109218818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:28:52,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:28:52,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 00:28:52,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030690600] [2023-12-22 00:28:52,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:28:52,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:28:52,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:52,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:28:52,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:28:52,701 INFO L87 Difference]: Start difference. First operand 28377 states and 35137 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 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 00:28:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:53,604 INFO L93 Difference]: Finished difference Result 30744 states and 38149 transitions. [2023-12-22 00:28:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:28:53,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 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 158 [2023-12-22 00:28:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:53,640 INFO L225 Difference]: With dead ends: 30744 [2023-12-22 00:28:53,640 INFO L226 Difference]: Without dead ends: 28121 [2023-12-22 00:28:53,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:28:53,650 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1616 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:53,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 3230 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:28:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28121 states. [2023-12-22 00:28:54,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28121 to 27398. [2023-12-22 00:28:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27398 states, 27396 states have (on average 1.2363848737041905) internal successors, (33872), 27397 states have internal predecessors, (33872), 0 states have call successors, (0), 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 00:28:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27398 states to 27398 states and 33872 transitions. [2023-12-22 00:28:54,810 INFO L78 Accepts]: Start accepts. Automaton has 27398 states and 33872 transitions. Word has length 158 [2023-12-22 00:28:54,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:54,811 INFO L495 AbstractCegarLoop]: Abstraction has 27398 states and 33872 transitions. [2023-12-22 00:28:54,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 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 00:28:54,811 INFO L276 IsEmpty]: Start isEmpty. Operand 27398 states and 33872 transitions. [2023-12-22 00:28:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-22 00:28:54,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:54,818 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:28:54,821 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 (32)] Ended with exit code 0 [2023-12-22 00:28:55,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:28:55,019 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:55,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:55,019 INFO L85 PathProgramCache]: Analyzing trace with hash -220506452, now seen corresponding path program 2 times [2023-12-22 00:28:55,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:55,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231371928] [2023-12-22 00:28:55,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:28:55,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:28:55,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:55,021 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:28:55,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-22 00:28:55,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 00:28:55,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:28:55,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:28:55,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-22 00:28:56,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:28:56,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:56,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231371928] [2023-12-22 00:28:56,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231371928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:28:56,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:28:56,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 00:28:56,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355260428] [2023-12-22 00:28:56,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:28:56,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:28:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:56,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:28:56,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:28:56,185 INFO L87 Difference]: Start difference. First operand 27398 states and 33872 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 00:28:57,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:28:57,116 INFO L93 Difference]: Finished difference Result 29687 states and 36782 transitions. [2023-12-22 00:28:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:28:57,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 158 [2023-12-22 00:28:57,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:28:57,150 INFO L225 Difference]: With dead ends: 29687 [2023-12-22 00:28:57,150 INFO L226 Difference]: Without dead ends: 28660 [2023-12-22 00:28:57,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:28:57,160 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 3037 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:28:57,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3037 Valid, 3229 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:28:57,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28660 states. [2023-12-22 00:28:58,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28660 to 28166. [2023-12-22 00:28:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28166 states, 28164 states have (on average 1.2336670927425082) internal successors, (34745), 28165 states have internal predecessors, (34745), 0 states have call successors, (0), 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 00:28:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28166 states to 28166 states and 34745 transitions. [2023-12-22 00:28:58,229 INFO L78 Accepts]: Start accepts. Automaton has 28166 states and 34745 transitions. Word has length 158 [2023-12-22 00:28:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:28:58,230 INFO L495 AbstractCegarLoop]: Abstraction has 28166 states and 34745 transitions. [2023-12-22 00:28:58,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 00:28:58,230 INFO L276 IsEmpty]: Start isEmpty. Operand 28166 states and 34745 transitions. [2023-12-22 00:28:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-22 00:28:58,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:28:58,236 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:28:58,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-22 00:28:58,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:28:58,437 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:28:58,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:28:58,437 INFO L85 PathProgramCache]: Analyzing trace with hash 277494352, now seen corresponding path program 2 times [2023-12-22 00:28:58,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:28:58,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978345591] [2023-12-22 00:28:58,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:28:58,438 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 00:28:58,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:28:58,438 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:28:58,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-22 00:28:58,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 00:28:58,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:28:58,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:28:58,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:28:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-22 00:28:59,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:28:59,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:28:59,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978345591] [2023-12-22 00:28:59,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978345591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:28:59,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:28:59,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 00:28:59,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121589079] [2023-12-22 00:28:59,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:28:59,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 00:28:59,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:28:59,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 00:28:59,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:28:59,565 INFO L87 Difference]: Start difference. First operand 28166 states and 34745 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 00:29:00,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:29:00,706 INFO L93 Difference]: Finished difference Result 30497 states and 37704 transitions. [2023-12-22 00:29:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 00:29:00,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 158 [2023-12-22 00:29:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:29:00,741 INFO L225 Difference]: With dead ends: 30497 [2023-12-22 00:29:00,741 INFO L226 Difference]: Without dead ends: 29440 [2023-12-22 00:29:00,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-22 00:29:00,751 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 3033 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:29:00,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3233 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 00:29:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29440 states. [2023-12-22 00:29:01,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29440 to 28946. [2023-12-22 00:29:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28946 states, 28944 states have (on average 1.2310668877833058) internal successors, (35632), 28945 states have internal predecessors, (35632), 0 states have call successors, (0), 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 00:29:01,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28946 states to 28946 states and 35632 transitions. [2023-12-22 00:29:01,846 INFO L78 Accepts]: Start accepts. Automaton has 28946 states and 35632 transitions. Word has length 158 [2023-12-22 00:29:01,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:29:01,846 INFO L495 AbstractCegarLoop]: Abstraction has 28946 states and 35632 transitions. [2023-12-22 00:29:01,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 00:29:01,847 INFO L276 IsEmpty]: Start isEmpty. Operand 28946 states and 35632 transitions. [2023-12-22 00:29:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-22 00:29:01,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:29:01,853 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:29:01,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-22 00:29:02,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:29:02,053 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:29:02,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:29:02,054 INFO L85 PathProgramCache]: Analyzing trace with hash -784482554, now seen corresponding path program 1 times [2023-12-22 00:29:02,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:29:02,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644748231] [2023-12-22 00:29:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:29:02,054 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 00:29:02,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:29:02,055 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:29:02,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-22 00:29:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:29:02,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 00:29:02,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:29:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 38 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:29:04,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:29:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 38 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:29:05,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:29:05,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644748231] [2023-12-22 00:29:05,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644748231] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:29:05,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:29:05,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 00:29:05,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916988436] [2023-12-22 00:29:05,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:29:05,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 00:29:05,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:29:05,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 00:29:05,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 00:29:05,566 INFO L87 Difference]: Start difference. First operand 28946 states and 35632 transitions. Second operand has 36 states, 36 states have (on average 8.5) internal successors, (306), 36 states have internal predecessors, (306), 0 states have call successors, (0), 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 00:29:25,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:29:25,703 INFO L93 Difference]: Finished difference Result 33633 states and 41128 transitions. [2023-12-22 00:29:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-22 00:29:25,704 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.5) internal successors, (306), 36 states have internal predecessors, (306), 0 states have call successors, (0), 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 159 [2023-12-22 00:29:25,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:29:25,736 INFO L225 Difference]: With dead ends: 33633 [2023-12-22 00:29:25,736 INFO L226 Difference]: Without dead ends: 31775 [2023-12-22 00:29:25,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4488 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=2331, Invalid=14961, Unknown=0, NotChecked=0, Total=17292 [2023-12-22 00:29:25,748 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 2379 mSDsluCounter, 39266 mSDsCounter, 0 mSdLazyCounter, 6443 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2379 SdHoareTripleChecker+Valid, 40952 SdHoareTripleChecker+Invalid, 6469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 6443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-22 00:29:25,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2379 Valid, 40952 Invalid, 6469 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 6443 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-22 00:29:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31775 states. [2023-12-22 00:29:26,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31775 to 22679. [2023-12-22 00:29:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22679 states, 22677 states have (on average 1.2512678043832959) internal successors, (28375), 22678 states have internal predecessors, (28375), 0 states have call successors, (0), 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 00:29:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22679 states to 22679 states and 28375 transitions. [2023-12-22 00:29:26,560 INFO L78 Accepts]: Start accepts. Automaton has 22679 states and 28375 transitions. Word has length 159 [2023-12-22 00:29:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:29:26,560 INFO L495 AbstractCegarLoop]: Abstraction has 22679 states and 28375 transitions. [2023-12-22 00:29:26,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.5) internal successors, (306), 36 states have internal predecessors, (306), 0 states have call successors, (0), 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 00:29:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 22679 states and 28375 transitions. [2023-12-22 00:29:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-22 00:29:26,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:29:26,564 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:29:26,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-22 00:29:26,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:29:26,764 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:29:26,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:29:26,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1256713046, now seen corresponding path program 1 times [2023-12-22 00:29:26,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:29:26,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072092202] [2023-12-22 00:29:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:29:26,765 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 00:29:26,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:29:26,766 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:29:26,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-22 00:29:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:29:26,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 00:29:26,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:29:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 54 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:29:28,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:29:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 54 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:29:29,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:29:29,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072092202] [2023-12-22 00:29:29,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072092202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:29:29,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:29:29,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 00:29:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438654723] [2023-12-22 00:29:29,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:29:29,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 00:29:29,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:29:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 00:29:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 00:29:29,805 INFO L87 Difference]: Start difference. First operand 22679 states and 28375 transitions. Second operand has 36 states, 36 states have (on average 8.36111111111111) internal successors, (301), 36 states have internal predecessors, (301), 0 states have call successors, (0), 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 00:29:50,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:29:50,626 INFO L93 Difference]: Finished difference Result 27046 states and 33477 transitions. [2023-12-22 00:29:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-12-22 00:29:50,627 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.36111111111111) internal successors, (301), 36 states have internal predecessors, (301), 0 states have call successors, (0), 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 159 [2023-12-22 00:29:50,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:29:50,647 INFO L225 Difference]: With dead ends: 27046 [2023-12-22 00:29:50,647 INFO L226 Difference]: Without dead ends: 25169 [2023-12-22 00:29:50,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6304 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=2857, Invalid=19195, Unknown=0, NotChecked=0, Total=22052 [2023-12-22 00:29:50,655 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 5337 mSDsluCounter, 37631 mSDsCounter, 0 mSdLazyCounter, 6014 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5337 SdHoareTripleChecker+Valid, 39315 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 6014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-22 00:29:50,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5337 Valid, 39315 Invalid, 6050 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 6014 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-22 00:29:50,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25169 states. [2023-12-22 00:29:51,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25169 to 23091. [2023-12-22 00:29:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23091 states, 23089 states have (on average 1.2490796483173805) internal successors, (28840), 23090 states have internal predecessors, (28840), 0 states have call successors, (0), 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 00:29:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23091 states to 23091 states and 28840 transitions. [2023-12-22 00:29:51,447 INFO L78 Accepts]: Start accepts. Automaton has 23091 states and 28840 transitions. Word has length 159 [2023-12-22 00:29:51,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:29:51,447 INFO L495 AbstractCegarLoop]: Abstraction has 23091 states and 28840 transitions. [2023-12-22 00:29:51,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.36111111111111) internal successors, (301), 36 states have internal predecessors, (301), 0 states have call successors, (0), 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 00:29:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 23091 states and 28840 transitions. [2023-12-22 00:29:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-22 00:29:51,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:29:51,451 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:29:51,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-22 00:29:51,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:29:51,651 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:29:51,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:29:51,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1296409990, now seen corresponding path program 1 times [2023-12-22 00:29:51,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:29:51,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538452057] [2023-12-22 00:29:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:29:51,652 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 00:29:51,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:29:51,653 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:29:51,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-22 00:29:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:29:51,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 00:29:51,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:29:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:29:53,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:29:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:29:54,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:29:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538452057] [2023-12-22 00:29:54,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538452057] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:29:54,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:29:54,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 00:29:54,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771496496] [2023-12-22 00:29:54,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:29:54,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 00:29:54,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:29:54,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 00:29:54,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 00:29:54,509 INFO L87 Difference]: Start difference. First operand 23091 states and 28840 transitions. Second operand has 36 states, 36 states have (on average 8.222222222222221) internal successors, (296), 36 states have internal predecessors, (296), 0 states have call successors, (0), 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 00:30:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:30:15,431 INFO L93 Difference]: Finished difference Result 27851 states and 34349 transitions. [2023-12-22 00:30:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-12-22 00:30:15,432 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.222222222222221) internal successors, (296), 36 states have internal predecessors, (296), 0 states have call successors, (0), 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 159 [2023-12-22 00:30:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:30:15,455 INFO L225 Difference]: With dead ends: 27851 [2023-12-22 00:30:15,455 INFO L226 Difference]: Without dead ends: 25930 [2023-12-22 00:30:15,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6993 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=3125, Invalid=21367, Unknown=0, NotChecked=0, Total=24492 [2023-12-22 00:30:15,462 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 6959 mSDsluCounter, 38172 mSDsCounter, 0 mSdLazyCounter, 7070 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6959 SdHoareTripleChecker+Valid, 39893 SdHoareTripleChecker+Invalid, 7104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 7070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-22 00:30:15,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6959 Valid, 39893 Invalid, 7104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 7070 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-22 00:30:15,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25930 states. [2023-12-22 00:30:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25930 to 23278. [2023-12-22 00:30:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23278 states, 23276 states have (on average 1.247765939164805) internal successors, (29043), 23277 states have internal predecessors, (29043), 0 states have call successors, (0), 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 00:30:16,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23278 states to 23278 states and 29043 transitions. [2023-12-22 00:30:16,287 INFO L78 Accepts]: Start accepts. Automaton has 23278 states and 29043 transitions. Word has length 159 [2023-12-22 00:30:16,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:30:16,287 INFO L495 AbstractCegarLoop]: Abstraction has 23278 states and 29043 transitions. [2023-12-22 00:30:16,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.222222222222221) internal successors, (296), 36 states have internal predecessors, (296), 0 states have call successors, (0), 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 00:30:16,287 INFO L276 IsEmpty]: Start isEmpty. Operand 23278 states and 29043 transitions. [2023-12-22 00:30:16,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-22 00:30:16,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:30:16,290 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:30:16,294 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 (37)] Forceful destruction successful, exit code 0 [2023-12-22 00:30:16,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:30:16,491 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:30:16,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:30:16,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1389241036, now seen corresponding path program 1 times [2023-12-22 00:30:16,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:30:16,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289313164] [2023-12-22 00:30:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:30:16,492 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 00:30:16,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:30:16,493 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:30:16,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-22 00:30:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:30:16,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 00:30:16,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:30:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 32 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:30:18,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:30:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 32 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:30:19,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:30:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289313164] [2023-12-22 00:30:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289313164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:30:19,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:30:19,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 00:30:19,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567617468] [2023-12-22 00:30:19,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:30:19,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 00:30:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:30:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 00:30:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 00:30:19,638 INFO L87 Difference]: Start difference. First operand 23278 states and 29043 transitions. Second operand has 36 states, 36 states have (on average 8.666666666666666) internal successors, (312), 36 states have internal predecessors, (312), 0 states have call successors, (0), 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 00:30:38,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:30:38,413 INFO L93 Difference]: Finished difference Result 35693 states and 43367 transitions. [2023-12-22 00:30:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-22 00:30:38,413 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.666666666666666) internal successors, (312), 36 states have internal predecessors, (312), 0 states have call successors, (0), 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 160 [2023-12-22 00:30:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:30:38,445 INFO L225 Difference]: With dead ends: 35693 [2023-12-22 00:30:38,445 INFO L226 Difference]: Without dead ends: 33945 [2023-12-22 00:30:38,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4172 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=2091, Invalid=14165, Unknown=0, NotChecked=0, Total=16256 [2023-12-22 00:30:38,454 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 3616 mSDsluCounter, 39193 mSDsCounter, 0 mSdLazyCounter, 6200 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3616 SdHoareTripleChecker+Valid, 40877 SdHoareTripleChecker+Invalid, 6222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 6200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:30:38,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3616 Valid, 40877 Invalid, 6222 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 6200 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-22 00:30:38,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33945 states. [2023-12-22 00:30:39,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33945 to 31559. [2023-12-22 00:30:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31559 states, 31557 states have (on average 1.2225813607123617) internal successors, (38581), 31558 states have internal predecessors, (38581), 0 states have call successors, (0), 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 00:30:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31559 states to 31559 states and 38581 transitions. [2023-12-22 00:30:40,010 INFO L78 Accepts]: Start accepts. Automaton has 31559 states and 38581 transitions. Word has length 160 [2023-12-22 00:30:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:30:40,010 INFO L495 AbstractCegarLoop]: Abstraction has 31559 states and 38581 transitions. [2023-12-22 00:30:40,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.666666666666666) internal successors, (312), 36 states have internal predecessors, (312), 0 states have call successors, (0), 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 00:30:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 31559 states and 38581 transitions. [2023-12-22 00:30:40,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-22 00:30:40,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:30:40,023 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:40,027 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 (38)] Forceful destruction successful, exit code 0 [2023-12-22 00:30:40,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:30:40,224 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:30:40,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:30:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1142910318, now seen corresponding path program 1 times [2023-12-22 00:30:40,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:30:40,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986921297] [2023-12-22 00:30:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:30:40,225 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 00:30:40,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:30:40,227 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:30:40,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-22 00:30:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:30:40,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 00:30:40,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:30:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:30:41,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:30:41,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:30:41,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986921297] [2023-12-22 00:30:41,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986921297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:30:41,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:30:41,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:30:41,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529774087] [2023-12-22 00:30:41,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:30:41,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 00:30:41,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:30:41,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 00:30:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 00:30:41,208 INFO L87 Difference]: Start difference. First operand 31559 states and 38581 transitions. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 00:31:11,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:31:11,121 INFO L93 Difference]: Finished difference Result 45115 states and 56422 transitions. [2023-12-22 00:31:11,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 00:31:11,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2023-12-22 00:31:11,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:31:11,150 INFO L225 Difference]: With dead ends: 45115 [2023-12-22 00:31:11,151 INFO L226 Difference]: Without dead ends: 30808 [2023-12-22 00:31:11,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 194 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 00:31:11,164 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 770 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2999 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2023-12-22 00:31:11,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 822 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2999 Invalid, 0 Unknown, 0 Unchecked, 28.4s Time] [2023-12-22 00:31:11,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30808 states. [2023-12-22 00:31:12,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30808 to 30808. [2023-12-22 00:31:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30808 states, 30806 states have (on average 1.2249237161591897) internal successors, (37735), 30807 states have internal predecessors, (37735), 0 states have call successors, (0), 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 00:31:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30808 states to 30808 states and 37735 transitions. [2023-12-22 00:31:12,838 INFO L78 Accepts]: Start accepts. Automaton has 30808 states and 37735 transitions. Word has length 197 [2023-12-22 00:31:12,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:31:12,838 INFO L495 AbstractCegarLoop]: Abstraction has 30808 states and 37735 transitions. [2023-12-22 00:31:12,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 00:31:12,838 INFO L276 IsEmpty]: Start isEmpty. Operand 30808 states and 37735 transitions. [2023-12-22 00:31:12,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-22 00:31:12,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:31:12,850 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:12,854 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 (39)] Forceful destruction successful, exit code 0 [2023-12-22 00:31:13,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:31:13,050 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:31:13,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:31:13,051 INFO L85 PathProgramCache]: Analyzing trace with hash 940718176, now seen corresponding path program 2 times [2023-12-22 00:31:13,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:31:13,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416446440] [2023-12-22 00:31:13,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:31:13,051 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 00:31:13,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:31:13,052 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:31:13,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-22 00:31:13,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 00:31:13,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:31:13,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-22 00:31:13,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:31:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 77 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:31:16,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:31:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 77 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:31:18,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:31:18,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416446440] [2023-12-22 00:31:18,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416446440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:31:18,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:31:18,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 44 [2023-12-22 00:31:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226936079] [2023-12-22 00:31:18,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:31:18,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-22 00:31:18,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:31:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-22 00:31:18,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1737, Unknown=0, NotChecked=0, Total=1892 [2023-12-22 00:31:18,113 INFO L87 Difference]: Start difference. First operand 30808 states and 37735 transitions. Second operand has 44 states, 44 states have (on average 8.818181818181818) internal successors, (388), 44 states have internal predecessors, (388), 0 states have call successors, (0), 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 00:32:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:32:22,021 INFO L93 Difference]: Finished difference Result 36859 states and 44823 transitions. [2023-12-22 00:32:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 267 states. [2023-12-22 00:32:22,022 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.818181818181818) internal successors, (388), 44 states have internal predecessors, (388), 0 states have call successors, (0), 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 203 [2023-12-22 00:32:22,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:32:22,056 INFO L225 Difference]: With dead ends: 36859 [2023-12-22 00:32:22,056 INFO L226 Difference]: Without dead ends: 33061 [2023-12-22 00:32:22,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33486 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=9253, Invalid=84077, Unknown=0, NotChecked=0, Total=93330 [2023-12-22 00:32:22,070 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 27639 mSDsluCounter, 19069 mSDsCounter, 0 mSdLazyCounter, 7297 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27639 SdHoareTripleChecker+Valid, 20811 SdHoareTripleChecker+Invalid, 7392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 7297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:32:22,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27639 Valid, 20811 Invalid, 7392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 7297 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2023-12-22 00:32:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33061 states. [2023-12-22 00:32:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33061 to 31604. [2023-12-22 00:32:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31604 states, 31602 states have (on average 1.2223277007784317) internal successors, (38628), 31603 states have internal predecessors, (38628), 0 states have call successors, (0), 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 00:32:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31604 states to 31604 states and 38628 transitions. [2023-12-22 00:32:23,829 INFO L78 Accepts]: Start accepts. Automaton has 31604 states and 38628 transitions. Word has length 203 [2023-12-22 00:32:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:32:23,829 INFO L495 AbstractCegarLoop]: Abstraction has 31604 states and 38628 transitions. [2023-12-22 00:32:23,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.818181818181818) internal successors, (388), 44 states have internal predecessors, (388), 0 states have call successors, (0), 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 00:32:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 31604 states and 38628 transitions. [2023-12-22 00:32:23,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-22 00:32:23,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:32:23,840 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:32:23,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-22 00:32:24,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:32:24,041 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:32:24,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:32:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash 823193256, now seen corresponding path program 1 times [2023-12-22 00:32:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:32:24,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526024664] [2023-12-22 00:32:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:32:24,041 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 00:32:24,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:32:24,042 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:32:24,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-22 00:32:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:32:24,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-22 00:32:24,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:32:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 100 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:32:26,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:32:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 100 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:32:28,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:32:28,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526024664] [2023-12-22 00:32:28,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526024664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:32:28,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:32:28,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 44 [2023-12-22 00:32:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801649849] [2023-12-22 00:32:28,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:32:28,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-22 00:32:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:32:28,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-22 00:32:28,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1737, Unknown=0, NotChecked=0, Total=1892 [2023-12-22 00:32:28,581 INFO L87 Difference]: Start difference. First operand 31604 states and 38628 transitions. Second operand has 44 states, 44 states have (on average 8.704545454545455) internal successors, (383), 44 states have internal predecessors, (383), 0 states have call successors, (0), 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 00:33:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:33:29,994 INFO L93 Difference]: Finished difference Result 36869 states and 44766 transitions. [2023-12-22 00:33:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2023-12-22 00:33:29,996 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.704545454545455) internal successors, (383), 44 states have internal predecessors, (383), 0 states have call successors, (0), 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 203 [2023-12-22 00:33:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:33:30,031 INFO L225 Difference]: With dead ends: 36869 [2023-12-22 00:33:30,032 INFO L226 Difference]: Without dead ends: 32185 [2023-12-22 00:33:30,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30215 ImplicationChecksByTransitivity, 46.7s TimeCoverageRelationStatistics Valid=8481, Invalid=77075, Unknown=0, NotChecked=0, Total=85556 [2023-12-22 00:33:30,042 INFO L413 NwaCegarLoop]: 1765 mSDtfsCounter, 27707 mSDsluCounter, 21068 mSDsCounter, 0 mSdLazyCounter, 7955 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27707 SdHoareTripleChecker+Valid, 22833 SdHoareTripleChecker+Invalid, 8050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 7955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-22 00:33:30,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27707 Valid, 22833 Invalid, 8050 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 7955 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-12-22 00:33:30,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32185 states. [2023-12-22 00:33:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32185 to 31005. [2023-12-22 00:33:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31005 states, 31003 states have (on average 1.2218172434925652) internal successors, (37880), 31004 states have internal predecessors, (37880), 0 states have call successors, (0), 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 00:33:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31005 states to 31005 states and 37880 transitions. [2023-12-22 00:33:31,801 INFO L78 Accepts]: Start accepts. Automaton has 31005 states and 37880 transitions. Word has length 203 [2023-12-22 00:33:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:33:31,802 INFO L495 AbstractCegarLoop]: Abstraction has 31005 states and 37880 transitions. [2023-12-22 00:33:31,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.704545454545455) internal successors, (383), 44 states have internal predecessors, (383), 0 states have call successors, (0), 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 00:33:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 31005 states and 37880 transitions. [2023-12-22 00:33:31,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-22 00:33:31,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:33:31,815 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:33:31,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-22 00:33:32,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:33:32,020 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:33:32,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:33:32,020 INFO L85 PathProgramCache]: Analyzing trace with hash 867231072, now seen corresponding path program 1 times [2023-12-22 00:33:32,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:33:32,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783344698] [2023-12-22 00:33:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:33:32,021 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 00:33:32,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:33:32,022 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:33:32,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-22 00:33:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:33:32,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-22 00:33:32,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:33:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 260 proven. 186 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-22 00:33:36,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:33:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 260 proven. 186 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-22 00:33:39,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:33:39,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783344698] [2023-12-22 00:33:39,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783344698] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:33:39,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:33:39,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 44 [2023-12-22 00:33:39,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302444473] [2023-12-22 00:33:39,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:33:39,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-22 00:33:39,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:33:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-22 00:33:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1722, Unknown=0, NotChecked=0, Total=1892 [2023-12-22 00:33:39,153 INFO L87 Difference]: Start difference. First operand 31005 states and 37880 transitions. Second operand has 44 states, 44 states have (on average 7.045454545454546) internal successors, (310), 44 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-22 00:37:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 440 states. [2023-12-22 00:37:36,514 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 00:37:36,515 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 (42)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 00:37:36,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 475 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96769 ImplicationChecksByTransitivity, 209.8s TimeCoverageRelationStatistics Valid=18127, Invalid=208925, Unknown=0, NotChecked=0, Total=227052 [2023-12-22 00:37:36,523 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 5204 mSDsluCounter, 6340 mSDsCounter, 0 mSdLazyCounter, 8115 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5204 SdHoareTripleChecker+Valid, 6733 SdHoareTripleChecker+Invalid, 8274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 8115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2023-12-22 00:37:36,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5204 Valid, 6733 Invalid, 8274 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [159 Valid, 8115 Invalid, 0 Unknown, 0 Unchecked, 27.7s Time] [2023-12-22 00:37:36,524 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-22 00:37:36,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-22 00:37:36,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:37:36,726 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (31005states) and FLOYD_HOARE automaton (currently 440 states, 44 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 477 known predicates. [2023-12-22 00:37:36,728 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-22 00:37:36,730 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:37:36,732 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 00:37:36,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:37:36 BoogieIcfgContainer [2023-12-22 00:37:36,734 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 00:37:36,734 INFO L158 Benchmark]: Toolchain (without parser) took 842497.34ms. Allocated memory was 275.8MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 225.5MB in the beginning and 948.7MB in the end (delta: -723.2MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-22 00:37:36,734 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 189.8MB. Free memory is still 137.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 00:37:36,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1806.72ms. Allocated memory is still 275.8MB. Free memory was 225.0MB in the beginning and 182.0MB in the end (delta: 43.0MB). Peak memory consumption was 126.9MB. Max. memory is 8.0GB. [2023-12-22 00:37:36,734 INFO L158 Benchmark]: Boogie Procedure Inliner took 282.98ms. Allocated memory was 275.8MB in the beginning and 354.4MB in the end (delta: 78.6MB). Free memory was 181.5MB in the beginning and 267.0MB in the end (delta: -85.6MB). Peak memory consumption was 30.3MB. Max. memory is 8.0GB. [2023-12-22 00:37:36,734 INFO L158 Benchmark]: Boogie Preprocessor took 293.77ms. Allocated memory is still 354.4MB. Free memory was 267.0MB in the beginning and 227.7MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-22 00:37:36,734 INFO L158 Benchmark]: RCFGBuilder took 24800.90ms. Allocated memory was 354.4MB in the beginning and 621.8MB in the end (delta: 267.4MB). Free memory was 227.7MB in the beginning and 333.0MB in the end (delta: -105.3MB). Peak memory consumption was 171.0MB. Max. memory is 8.0GB. [2023-12-22 00:37:36,735 INFO L158 Benchmark]: TraceAbstraction took 815304.81ms. Allocated memory was 621.8MB in the beginning and 2.4GB in the end (delta: 1.8GB). Free memory was 332.5MB in the beginning and 948.7MB in the end (delta: -616.2MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-22 00:37:36,735 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 189.8MB. Free memory is still 137.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1806.72ms. Allocated memory is still 275.8MB. Free memory was 225.0MB in the beginning and 182.0MB in the end (delta: 43.0MB). Peak memory consumption was 126.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 282.98ms. Allocated memory was 275.8MB in the beginning and 354.4MB in the end (delta: 78.6MB). Free memory was 181.5MB in the beginning and 267.0MB in the end (delta: -85.6MB). Peak memory consumption was 30.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 293.77ms. Allocated memory is still 354.4MB. Free memory was 267.0MB in the beginning and 227.7MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * RCFGBuilder took 24800.90ms. Allocated memory was 354.4MB in the beginning and 621.8MB in the end (delta: 267.4MB). Free memory was 227.7MB in the beginning and 333.0MB in the end (delta: -105.3MB). Peak memory consumption was 171.0MB. Max. memory is 8.0GB. * TraceAbstraction took 815304.81ms. Allocated memory was 621.8MB in the beginning and 2.4GB in the end (delta: 1.8GB). Free memory was 332.5MB in the beginning and 948.7MB in the end (delta: -616.2MB). Peak memory consumption was 1.1GB. 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: 359]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 359). Cancelled while NwaCegarLoop was constructing difference of abstraction (31005states) and FLOYD_HOARE automaton (currently 440 states, 44 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 477 known predicates. - TimeoutResultAtElement [Line: 395]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 395). Cancelled while NwaCegarLoop was constructing difference of abstraction (31005states) and FLOYD_HOARE automaton (currently 440 states, 44 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 477 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 820 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 815.2s, OverallIterations: 41, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 727.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 191493 SdHoareTripleChecker+Valid, 334.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191493 mSDsluCounter, 436472 SdHoareTripleChecker+Invalid, 287.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 378555 mSDsCounter, 3313 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77449 IncrementalHoareTripleChecker+Invalid, 80762 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3313 mSolverCounterUnsat, 57917 mSDtfsCounter, 77449 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8099 GetRequests, 5912 SyntacticMatches, 0 SemanticMatches, 2186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188369 ImplicationChecksByTransitivity, 383.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31604occurred in iteration=39, InterpolantAutomatonStates: 1388, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 20.5s AutomataMinimizationTime, 40 MinimizatonAttempts, 41731 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 55.2s InterpolantComputationTime, 4127 NumberOfCodeBlocks, 3711 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 6439 ConstructedInterpolants, 1760 QuantifiedInterpolants, 85202 SizeOfPredicates, 194 NumberOfNonLiveVariables, 8743 ConjunctsInSsa, 350 ConjunctsInUnsatCore, 60 InterpolantComputations, 22 PerfectInterpolantSequences, 2979/7643 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