/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/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 08:02:39,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 08:02:39,123 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 08:02:39,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 08:02:39,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 08:02:39,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 08:02:39,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 08:02:39,158 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 08:02:39,159 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 08:02:39,162 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 08:02:39,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 08:02:39,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 08:02:39,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 08:02:39,164 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 08:02:39,164 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 08:02:39,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 08:02:39,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 08:02:39,164 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 08:02:39,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 08:02:39,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 08:02:39,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 08:02:39,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 08:02:39,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 08:02:39,166 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 08:02:39,166 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 08:02:39,166 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 08:02:39,166 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 08:02:39,166 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 08:02:39,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 08:02:39,167 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 08:02:39,168 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 08:02:39,168 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 08:02:39,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 08:02:39,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 08:02:39,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 08:02:39,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 08:02:39,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 08:02:39,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 08:02:39,169 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 08:02:39,169 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 08:02:39,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 08:02:39,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 08:02:39,169 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 08:02:39,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 08:02:39,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 08:02:39,170 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 08:02:39,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 08:02:39,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 08:02:39,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 08:02:39,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 08:02:39,414 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 08:02:39,416 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 08:02:39,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c [2023-12-25 08:02:40,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 08:02:40,791 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 08:02:40,791 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c [2023-12-25 08:02:40,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f39ac945d/fab4980102904668baaf3e691ebd991b/FLAG4365e5145 [2023-12-25 08:02:40,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f39ac945d/fab4980102904668baaf3e691ebd991b [2023-12-25 08:02:40,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 08:02:40,818 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 08:02:40,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 08:02:40,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 08:02:40,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 08:02:40,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:02:40" (1/1) ... [2023-12-25 08:02:40,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b96dbfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:40, skipping insertion in model container [2023-12-25 08:02:40,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:02:40" (1/1) ... [2023-12-25 08:02:40,879 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 08:02:41,208 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c[30998,31011] [2023-12-25 08:02:41,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 08:02:41,225 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 08:02:41,299 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c[30998,31011] [2023-12-25 08:02:41,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 08:02:41,316 INFO L206 MainTranslator]: Completed translation [2023-12-25 08:02:41,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41 WrapperNode [2023-12-25 08:02:41,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 08:02:41,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 08:02:41,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 08:02:41,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 08:02:41,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,377 INFO L138 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 976 [2023-12-25 08:02:41,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 08:02:41,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 08:02:41,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 08:02:41,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 08:02:41,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,396 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,417 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]. [2023-12-25 08:02:41,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 08:02:41,485 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 08:02:41,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 08:02:41,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 08:02:41,486 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (1/1) ... [2023-12-25 08:02:41,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 08:02:41,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 08:02:41,554 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) [2023-12-25 08:02:41,628 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 [2023-12-25 08:02:41,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 08:02:41,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 08:02:41,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 08:02:41,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 08:02:41,802 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 08:02:41,805 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 08:02:42,489 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 08:02:42,522 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 08:02:42,522 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 08:02:42,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:02:42 BoogieIcfgContainer [2023-12-25 08:02:42,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 08:02:42,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 08:02:42,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 08:02:42,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 08:02:42,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 08:02:40" (1/3) ... [2023-12-25 08:02:42,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef60ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:02:42, skipping insertion in model container [2023-12-25 08:02:42,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:02:41" (2/3) ... [2023-12-25 08:02:42,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef60ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:02:42, skipping insertion in model container [2023-12-25 08:02:42,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:02:42" (3/3) ... [2023-12-25 08:02:42,530 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c [2023-12-25 08:02:42,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 08:02:42,543 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 08:02:42,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 08:02:42,635 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;@476204d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 08:02:42,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 08:02:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 293 states have (on average 1.8464163822525597) internal successors, (541), 294 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:42,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 08:02:42,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:42,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:42,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:42,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:42,671 INFO L85 PathProgramCache]: Analyzing trace with hash 161010011, now seen corresponding path program 1 times [2023-12-25 08:02:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:42,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384430157] [2023-12-25 08:02:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:42,682 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 [2023-12-25 08:02:42,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:42,688 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) [2023-12-25 08:02:42,732 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 [2023-12-25 08:02:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:42,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 08:02:42,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:42,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:42,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:42,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384430157] [2023-12-25 08:02:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384430157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:42,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:42,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 08:02:42,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108457023] [2023-12-25 08:02:42,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:42,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 08:02:42,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:42,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 08:02:42,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 08:02:42,922 INFO L87 Difference]: Start difference. First operand has 295 states, 293 states have (on average 1.8464163822525597) internal successors, (541), 294 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:42,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:42,958 INFO L93 Difference]: Finished difference Result 397 states and 722 transitions. [2023-12-25 08:02:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 08:02:42,960 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-25 08:02:42,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:42,968 INFO L225 Difference]: With dead ends: 397 [2023-12-25 08:02:42,968 INFO L226 Difference]: Without dead ends: 293 [2023-12-25 08:02:42,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 08:02:42,973 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:42,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 534 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:42,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-25 08:02:43,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2023-12-25 08:02:43,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.8356164383561644) internal successors, (536), 292 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 536 transitions. [2023-12-25 08:02:43,010 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 536 transitions. Word has length 74 [2023-12-25 08:02:43,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:43,011 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 536 transitions. [2023-12-25 08:02:43,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 536 transitions. [2023-12-25 08:02:43,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 08:02:43,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:43,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:43,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-25 08:02:43,216 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 [2023-12-25 08:02:43,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:43,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:43,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1644428323, now seen corresponding path program 1 times [2023-12-25 08:02:43,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:43,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843071103] [2023-12-25 08:02:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:43,219 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 [2023-12-25 08:02:43,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:43,220 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) [2023-12-25 08:02:43,249 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 [2023-12-25 08:02:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:43,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 08:02:43,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:43,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:43,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843071103] [2023-12-25 08:02:43,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843071103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:43,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 08:02:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021273660] [2023-12-25 08:02:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:43,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:02:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:02:43,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:02:43,355 INFO L87 Difference]: Start difference. First operand 293 states and 536 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:43,418 INFO L93 Difference]: Finished difference Result 395 states and 715 transitions. [2023-12-25 08:02:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 08:02:43,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-25 08:02:43,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:43,420 INFO L225 Difference]: With dead ends: 395 [2023-12-25 08:02:43,420 INFO L226 Difference]: Without dead ends: 293 [2023-12-25 08:02:43,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:02:43,421 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 0 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:43,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1550 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-25 08:02:43,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2023-12-25 08:02:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.678082191780822) internal successors, (490), 292 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 490 transitions. [2023-12-25 08:02:43,431 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 490 transitions. Word has length 74 [2023-12-25 08:02:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:43,431 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 490 transitions. [2023-12-25 08:02:43,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 490 transitions. [2023-12-25 08:02:43,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-25 08:02:43,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:43,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:43,439 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 [2023-12-25 08:02:43,637 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 [2023-12-25 08:02:43,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:43,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:43,638 INFO L85 PathProgramCache]: Analyzing trace with hash 427323051, now seen corresponding path program 1 times [2023-12-25 08:02:43,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:43,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892692144] [2023-12-25 08:02:43,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:43,639 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 [2023-12-25 08:02:43,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:43,640 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) [2023-12-25 08:02:43,645 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 [2023-12-25 08:02:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:43,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:02:43,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:43,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:43,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:43,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892692144] [2023-12-25 08:02:43,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892692144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:43,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:43,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:43,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467070906] [2023-12-25 08:02:43,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:43,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:02:43,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:43,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:02:43,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:43,810 INFO L87 Difference]: Start difference. First operand 293 states and 490 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:43,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:43,841 INFO L93 Difference]: Finished difference Result 479 states and 820 transitions. [2023-12-25 08:02:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:02:43,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-25 08:02:43,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:43,843 INFO L225 Difference]: With dead ends: 479 [2023-12-25 08:02:43,843 INFO L226 Difference]: Without dead ends: 380 [2023-12-25 08:02:43,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:43,857 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 146 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:43,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 918 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-25 08:02:43,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 378. [2023-12-25 08:02:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.6923076923076923) internal successors, (638), 377 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:43,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 638 transitions. [2023-12-25 08:02:43,870 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 638 transitions. Word has length 119 [2023-12-25 08:02:43,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:43,870 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 638 transitions. [2023-12-25 08:02:43,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:43,870 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 638 transitions. [2023-12-25 08:02:43,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-25 08:02:43,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:43,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:43,887 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 [2023-12-25 08:02:44,087 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 [2023-12-25 08:02:44,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:44,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:44,088 INFO L85 PathProgramCache]: Analyzing trace with hash 694490375, now seen corresponding path program 1 times [2023-12-25 08:02:44,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:44,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343913107] [2023-12-25 08:02:44,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:44,089 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 [2023-12-25 08:02:44,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:44,090 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) [2023-12-25 08:02:44,124 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 (5)] Waiting until timeout for monitored process [2023-12-25 08:02:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:44,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:02:44,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:44,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:44,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:44,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343913107] [2023-12-25 08:02:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343913107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:44,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:44,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:44,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816150807] [2023-12-25 08:02:44,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:44,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:02:44,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:44,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:02:44,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:02:44,333 INFO L87 Difference]: Start difference. First operand 378 states and 638 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:44,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:44,384 INFO L93 Difference]: Finished difference Result 1112 states and 1873 transitions. [2023-12-25 08:02:44,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:02:44,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2023-12-25 08:02:44,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:44,388 INFO L225 Difference]: With dead ends: 1112 [2023-12-25 08:02:44,388 INFO L226 Difference]: Without dead ends: 744 [2023-12-25 08:02:44,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 08:02:44,390 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 972 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:44,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1105 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:44,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-12-25 08:02:44,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2023-12-25 08:02:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.6761133603238867) internal successors, (1242), 741 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1242 transitions. [2023-12-25 08:02:44,405 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1242 transitions. Word has length 122 [2023-12-25 08:02:44,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:44,406 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 1242 transitions. [2023-12-25 08:02:44,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1242 transitions. [2023-12-25 08:02:44,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-25 08:02:44,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:44,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:44,422 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 (5)] Forceful destruction successful, exit code 0 [2023-12-25 08:02:44,623 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 [2023-12-25 08:02:44,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:44,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1946935404, now seen corresponding path program 1 times [2023-12-25 08:02:44,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:44,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706734821] [2023-12-25 08:02:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:44,625 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 [2023-12-25 08:02:44,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:44,634 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) [2023-12-25 08:02:44,638 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 [2023-12-25 08:02:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:44,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:02:44,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:44,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:44,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:44,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706734821] [2023-12-25 08:02:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706734821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:44,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:44,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:44,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961219751] [2023-12-25 08:02:44,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:44,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:02:44,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:02:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:02:44,866 INFO L87 Difference]: Start difference. First operand 742 states and 1242 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:44,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:44,920 INFO L93 Difference]: Finished difference Result 2192 states and 3665 transitions. [2023-12-25 08:02:44,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:02:44,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-25 08:02:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:44,925 INFO L225 Difference]: With dead ends: 2192 [2023-12-25 08:02:44,925 INFO L226 Difference]: Without dead ends: 1461 [2023-12-25 08:02:44,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 08:02:44,927 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 959 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:44,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 1110 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:44,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2023-12-25 08:02:44,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1459. [2023-12-25 08:02:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1458 states have (on average 1.6604938271604939) internal successors, (2421), 1458 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2421 transitions. [2023-12-25 08:02:44,954 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2421 transitions. Word has length 123 [2023-12-25 08:02:44,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:44,954 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2421 transitions. [2023-12-25 08:02:44,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:44,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2421 transitions. [2023-12-25 08:02:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-25 08:02:44,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:44,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:44,975 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 (6)] Ended with exit code 0 [2023-12-25 08:02:45,160 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 [2023-12-25 08:02:45,161 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:45,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:45,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1966657039, now seen corresponding path program 1 times [2023-12-25 08:02:45,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:45,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052574319] [2023-12-25 08:02:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:45,162 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 [2023-12-25 08:02:45,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:45,185 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) [2023-12-25 08:02:45,204 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 [2023-12-25 08:02:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:45,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:02:45,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:45,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:45,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:45,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052574319] [2023-12-25 08:02:45,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052574319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:45,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:45,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:45,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411855904] [2023-12-25 08:02:45,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:45,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:02:45,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:02:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:45,348 INFO L87 Difference]: Start difference. First operand 1459 states and 2421 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:45,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:45,376 INFO L93 Difference]: Finished difference Result 2163 states and 3667 transitions. [2023-12-25 08:02:45,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:02:45,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-25 08:02:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:45,382 INFO L225 Difference]: With dead ends: 2163 [2023-12-25 08:02:45,382 INFO L226 Difference]: Without dead ends: 1781 [2023-12-25 08:02:45,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:45,384 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 155 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1076 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 [2023-12-25 08:02:45,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1076 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2023-12-25 08:02:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1779. [2023-12-25 08:02:45,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1778 states have (on average 1.6766029246344207) internal successors, (2981), 1778 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2981 transitions. [2023-12-25 08:02:45,417 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2981 transitions. Word has length 123 [2023-12-25 08:02:45,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:45,417 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2981 transitions. [2023-12-25 08:02:45,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:45,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2981 transitions. [2023-12-25 08:02:45,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-25 08:02:45,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:45,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:45,436 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 [2023-12-25 08:02:45,622 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 [2023-12-25 08:02:45,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:45,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:45,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1700025011, now seen corresponding path program 1 times [2023-12-25 08:02:45,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:45,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286656324] [2023-12-25 08:02:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:45,625 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 [2023-12-25 08:02:45,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:45,626 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) [2023-12-25 08:02:45,627 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 [2023-12-25 08:02:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:45,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:02:45,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:45,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:45,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286656324] [2023-12-25 08:02:45,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286656324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:45,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:45,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:45,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595341562] [2023-12-25 08:02:45,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:45,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:02:45,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:02:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:02:45,870 INFO L87 Difference]: Start difference. First operand 1779 states and 2981 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:45,937 INFO L93 Difference]: Finished difference Result 5264 states and 8814 transitions. [2023-12-25 08:02:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:02:45,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-12-25 08:02:45,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:45,948 INFO L225 Difference]: With dead ends: 5264 [2023-12-25 08:02:45,948 INFO L226 Difference]: Without dead ends: 3511 [2023-12-25 08:02:45,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 08:02:45,952 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 944 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:45,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 1113 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:45,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2023-12-25 08:02:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3509. [2023-12-25 08:02:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 3508 states have (on average 1.6630558722919042) internal successors, (5834), 3508 states have internal predecessors, (5834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:46,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 5834 transitions. [2023-12-25 08:02:46,017 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 5834 transitions. Word has length 124 [2023-12-25 08:02:46,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:46,017 INFO L495 AbstractCegarLoop]: Abstraction has 3509 states and 5834 transitions. [2023-12-25 08:02:46,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:46,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 5834 transitions. [2023-12-25 08:02:46,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-25 08:02:46,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:46,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:46,044 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 [2023-12-25 08:02:46,224 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 [2023-12-25 08:02:46,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:46,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:46,225 INFO L85 PathProgramCache]: Analyzing trace with hash -401988786, now seen corresponding path program 1 times [2023-12-25 08:02:46,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:46,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276908116] [2023-12-25 08:02:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:46,225 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 [2023-12-25 08:02:46,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:46,227 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) [2023-12-25 08:02:46,230 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 [2023-12-25 08:02:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:46,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:02:46,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:46,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:46,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:46,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276908116] [2023-12-25 08:02:46,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276908116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:46,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:46,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:46,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147566562] [2023-12-25 08:02:46,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:46,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:02:46,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:02:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:46,426 INFO L87 Difference]: Start difference. First operand 3509 states and 5834 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:46,471 INFO L93 Difference]: Finished difference Result 7341 states and 12504 transitions. [2023-12-25 08:02:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:02:46,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2023-12-25 08:02:46,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:46,486 INFO L225 Difference]: With dead ends: 7341 [2023-12-25 08:02:46,486 INFO L226 Difference]: Without dead ends: 5311 [2023-12-25 08:02:46,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:46,491 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 144 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:46,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 939 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2023-12-25 08:02:46,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 5309. [2023-12-25 08:02:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 1.6853805576488319) internal successors, (8946), 5308 states have internal predecessors, (8946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 8946 transitions. [2023-12-25 08:02:46,582 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 8946 transitions. Word has length 125 [2023-12-25 08:02:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:46,582 INFO L495 AbstractCegarLoop]: Abstraction has 5309 states and 8946 transitions. [2023-12-25 08:02:46,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 8946 transitions. [2023-12-25 08:02:46,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-25 08:02:46,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:46,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:46,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 08:02:46,807 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 [2023-12-25 08:02:46,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:46,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:46,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1641761841, now seen corresponding path program 1 times [2023-12-25 08:02:46,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:46,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868175218] [2023-12-25 08:02:46,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:46,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 08:02:46,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:46,810 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) [2023-12-25 08:02:46,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-25 08:02:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:46,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:02:46,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:47,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:47,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:47,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868175218] [2023-12-25 08:02:47,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868175218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:47,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:47,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:47,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224838071] [2023-12-25 08:02:47,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:47,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:02:47,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:47,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:02:47,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:02:47,016 INFO L87 Difference]: Start difference. First operand 5309 states and 8946 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:47,134 INFO L93 Difference]: Finished difference Result 15593 states and 26256 transitions. [2023-12-25 08:02:47,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:02:47,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-12-25 08:02:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:47,217 INFO L225 Difference]: With dead ends: 15593 [2023-12-25 08:02:47,217 INFO L226 Difference]: Without dead ends: 10419 [2023-12-25 08:02:47,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 08:02:47,223 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 888 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:47,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:47,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10419 states. [2023-12-25 08:02:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10419 to 10417. [2023-12-25 08:02:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10417 states, 10416 states have (on average 1.6726190476190477) internal successors, (17422), 10416 states have internal predecessors, (17422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10417 states to 10417 states and 17422 transitions. [2023-12-25 08:02:47,469 INFO L78 Accepts]: Start accepts. Automaton has 10417 states and 17422 transitions. Word has length 128 [2023-12-25 08:02:47,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:47,469 INFO L495 AbstractCegarLoop]: Abstraction has 10417 states and 17422 transitions. [2023-12-25 08:02:47,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 10417 states and 17422 transitions. [2023-12-25 08:02:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-25 08:02:47,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:47,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:47,482 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 [2023-12-25 08:02:47,680 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 [2023-12-25 08:02:47,681 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:47,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:47,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1876291975, now seen corresponding path program 1 times [2023-12-25 08:02:47,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:47,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393350489] [2023-12-25 08:02:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:47,682 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 [2023-12-25 08:02:47,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:47,683 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) [2023-12-25 08:02:47,685 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 [2023-12-25 08:02:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:47,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:02:47,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:47,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:47,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:47,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393350489] [2023-12-25 08:02:47,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393350489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:47,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:47,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:47,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865442807] [2023-12-25 08:02:47,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:47,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:02:47,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:47,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:02:47,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:47,821 INFO L87 Difference]: Start difference. First operand 10417 states and 17422 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:47,946 INFO L93 Difference]: Finished difference Result 21893 states and 37248 transitions. [2023-12-25 08:02:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:02:47,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-12-25 08:02:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:47,977 INFO L225 Difference]: With dead ends: 21893 [2023-12-25 08:02:47,977 INFO L226 Difference]: Without dead ends: 14299 [2023-12-25 08:02:47,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:47,989 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 153 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:47,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 969 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14299 states. [2023-12-25 08:02:48,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14299 to 13985. [2023-12-25 08:02:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13985 states, 13984 states have (on average 1.670337528604119) internal successors, (23358), 13984 states have internal predecessors, (23358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13985 states to 13985 states and 23358 transitions. [2023-12-25 08:02:48,312 INFO L78 Accepts]: Start accepts. Automaton has 13985 states and 23358 transitions. Word has length 129 [2023-12-25 08:02:48,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:48,312 INFO L495 AbstractCegarLoop]: Abstraction has 13985 states and 23358 transitions. [2023-12-25 08:02:48,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:48,313 INFO L276 IsEmpty]: Start isEmpty. Operand 13985 states and 23358 transitions. [2023-12-25 08:02:48,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-25 08:02:48,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:48,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:48,325 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 [2023-12-25 08:02:48,523 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 [2023-12-25 08:02:48,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:48,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:48,524 INFO L85 PathProgramCache]: Analyzing trace with hash -287944073, now seen corresponding path program 1 times [2023-12-25 08:02:48,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:48,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361525577] [2023-12-25 08:02:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:48,525 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 [2023-12-25 08:02:48,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:48,526 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) [2023-12-25 08:02:48,539 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 [2023-12-25 08:02:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:48,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:02:48,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:48,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:48,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:48,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361525577] [2023-12-25 08:02:48,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361525577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:48,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:48,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:48,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159592101] [2023-12-25 08:02:48,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:48,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:02:48,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:48,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:02:48,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:02:48,793 INFO L87 Difference]: Start difference. First operand 13985 states and 23358 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:48,955 INFO L93 Difference]: Finished difference Result 41399 states and 69152 transitions. [2023-12-25 08:02:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:02:48,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-12-25 08:02:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:49,000 INFO L225 Difference]: With dead ends: 41399 [2023-12-25 08:02:49,000 INFO L226 Difference]: Without dead ends: 27542 [2023-12-25 08:02:49,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 08:02:49,092 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 899 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:49,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1122 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27542 states. [2023-12-25 08:02:49,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27542 to 27540. [2023-12-25 08:02:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27540 states, 27539 states have (on average 1.6571407821634772) internal successors, (45636), 27539 states have internal predecessors, (45636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27540 states to 27540 states and 45636 transitions. [2023-12-25 08:02:49,646 INFO L78 Accepts]: Start accepts. Automaton has 27540 states and 45636 transitions. Word has length 129 [2023-12-25 08:02:49,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:49,646 INFO L495 AbstractCegarLoop]: Abstraction has 27540 states and 45636 transitions. [2023-12-25 08:02:49,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:49,647 INFO L276 IsEmpty]: Start isEmpty. Operand 27540 states and 45636 transitions. [2023-12-25 08:02:49,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-25 08:02:49,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:49,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:49,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 08:02:49,878 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 [2023-12-25 08:02:49,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:49,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash -771924947, now seen corresponding path program 1 times [2023-12-25 08:02:49,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:49,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079533574] [2023-12-25 08:02:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:49,880 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 [2023-12-25 08:02:49,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:49,881 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) [2023-12-25 08:02:49,891 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 [2023-12-25 08:02:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:49,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:02:49,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:50,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:50,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:50,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079533574] [2023-12-25 08:02:50,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079533574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:50,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:50,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:50,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786886796] [2023-12-25 08:02:50,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:50,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:02:50,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:50,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:02:50,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:50,017 INFO L87 Difference]: Start difference. First operand 27540 states and 45636 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:50,276 INFO L93 Difference]: Finished difference Result 49176 states and 82470 transitions. [2023-12-25 08:02:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:02:50,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-25 08:02:50,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:50,336 INFO L225 Difference]: With dead ends: 49176 [2023-12-25 08:02:50,336 INFO L226 Difference]: Without dead ends: 34182 [2023-12-25 08:02:50,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:50,356 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 145 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1069 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 [2023-12-25 08:02:50,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1069 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34182 states. [2023-12-25 08:02:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34182 to 34180. [2023-12-25 08:02:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34180 states, 34179 states have (on average 1.6624242956201176) internal successors, (56820), 34179 states have internal predecessors, (56820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34180 states to 34180 states and 56820 transitions. [2023-12-25 08:02:50,999 INFO L78 Accepts]: Start accepts. Automaton has 34180 states and 56820 transitions. Word has length 130 [2023-12-25 08:02:51,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:51,000 INFO L495 AbstractCegarLoop]: Abstraction has 34180 states and 56820 transitions. [2023-12-25 08:02:51,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:51,000 INFO L276 IsEmpty]: Start isEmpty. Operand 34180 states and 56820 transitions. [2023-12-25 08:02:51,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-25 08:02:51,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:51,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:51,022 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 [2023-12-25 08:02:51,220 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 [2023-12-25 08:02:51,220 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:51,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:51,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1813340521, now seen corresponding path program 1 times [2023-12-25 08:02:51,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:51,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967767628] [2023-12-25 08:02:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:51,222 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 [2023-12-25 08:02:51,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:51,223 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) [2023-12-25 08:02:51,227 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 [2023-12-25 08:02:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:51,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:02:51,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:51,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:51,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:51,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967767628] [2023-12-25 08:02:51,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967767628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:51,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:51,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:51,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980264795] [2023-12-25 08:02:51,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:51,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:02:51,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:51,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:02:51,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:02:51,444 INFO L87 Difference]: Start difference. First operand 34180 states and 56820 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:52,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:52,056 INFO L93 Difference]: Finished difference Result 99685 states and 165612 transitions. [2023-12-25 08:02:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:02:52,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-25 08:02:52,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:52,195 INFO L225 Difference]: With dead ends: 99685 [2023-12-25 08:02:52,195 INFO L226 Difference]: Without dead ends: 65765 [2023-12-25 08:02:52,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 08:02:52,224 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 877 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:52,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1120 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:52,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65765 states. [2023-12-25 08:02:53,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65765 to 65763. [2023-12-25 08:02:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65763 states, 65762 states have (on average 1.648246707825188) internal successors, (108392), 65762 states have internal predecessors, (108392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65763 states to 65763 states and 108392 transitions. [2023-12-25 08:02:53,347 INFO L78 Accepts]: Start accepts. Automaton has 65763 states and 108392 transitions. Word has length 130 [2023-12-25 08:02:53,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:53,347 INFO L495 AbstractCegarLoop]: Abstraction has 65763 states and 108392 transitions. [2023-12-25 08:02:53,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 65763 states and 108392 transitions. [2023-12-25 08:02:53,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-25 08:02:53,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:53,371 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:53,387 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 (14)] Forceful destruction successful, exit code 0 [2023-12-25 08:02:53,574 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 [2023-12-25 08:02:53,575 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:53,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1132888081, now seen corresponding path program 1 times [2023-12-25 08:02:53,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:53,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401185153] [2023-12-25 08:02:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:53,576 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 [2023-12-25 08:02:53,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:53,578 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) [2023-12-25 08:02:53,579 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 [2023-12-25 08:02:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:53,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:02:53,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:53,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:53,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401185153] [2023-12-25 08:02:53,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401185153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:53,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:53,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:53,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122232948] [2023-12-25 08:02:53,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:53,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:02:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:02:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:53,792 INFO L87 Difference]: Start difference. First operand 65763 states and 108392 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:55,065 INFO L93 Difference]: Finished difference Result 167971 states and 280262 transitions. [2023-12-25 08:02:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:02:55,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-12-25 08:02:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:55,255 INFO L225 Difference]: With dead ends: 167971 [2023-12-25 08:02:55,256 INFO L226 Difference]: Without dead ends: 113513 [2023-12-25 08:02:55,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:02:55,297 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 134 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:55,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 944 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:02:55,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113513 states. [2023-12-25 08:02:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113513 to 113511. [2023-12-25 08:02:57,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113511 states, 113510 states have (on average 1.6562065016298124) internal successors, (187996), 113510 states have internal predecessors, (187996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:57,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113511 states to 113511 states and 187996 transitions. [2023-12-25 08:02:57,385 INFO L78 Accepts]: Start accepts. Automaton has 113511 states and 187996 transitions. Word has length 131 [2023-12-25 08:02:57,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:57,385 INFO L495 AbstractCegarLoop]: Abstraction has 113511 states and 187996 transitions. [2023-12-25 08:02:57,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:57,385 INFO L276 IsEmpty]: Start isEmpty. Operand 113511 states and 187996 transitions. [2023-12-25 08:02:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-25 08:02:57,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:57,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:57,422 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 (15)] Forceful destruction successful, exit code 0 [2023-12-25 08:02:57,621 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 [2023-12-25 08:02:57,621 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:57,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:57,622 INFO L85 PathProgramCache]: Analyzing trace with hash -522533445, now seen corresponding path program 1 times [2023-12-25 08:02:57,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:57,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823822700] [2023-12-25 08:02:57,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:02:57,622 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 [2023-12-25 08:02:57,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:57,623 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) [2023-12-25 08:02:57,625 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 [2023-12-25 08:02:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:02:57,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:02:57,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:02:57,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:02:57,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:57,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823822700] [2023-12-25 08:02:57,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823822700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:02:57,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:02:57,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:02:57,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527694909] [2023-12-25 08:02:57,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:02:57,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:02:57,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:57,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:02:57,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:02:57,860 INFO L87 Difference]: Start difference. First operand 113511 states and 187996 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 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) [2023-12-25 08:02:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:59,840 INFO L93 Difference]: Finished difference Result 336579 states and 556854 transitions. [2023-12-25 08:02:59,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:02:59,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 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 134 [2023-12-25 08:02:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:03:00,360 INFO L225 Difference]: With dead ends: 336579 [2023-12-25 08:03:00,360 INFO L226 Difference]: Without dead ends: 224005 [2023-12-25 08:03:00,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 08:03:00,492 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 831 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:03:00,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1122 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:03:00,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224005 states. [2023-12-25 08:03:03,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224005 to 224003. [2023-12-25 08:03:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224003 states, 224002 states have (on average 1.6428424746207624) internal successors, (368000), 224002 states have internal predecessors, (368000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:03:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224003 states to 224003 states and 368000 transitions. [2023-12-25 08:03:04,788 INFO L78 Accepts]: Start accepts. Automaton has 224003 states and 368000 transitions. Word has length 134 [2023-12-25 08:03:04,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:03:04,808 INFO L495 AbstractCegarLoop]: Abstraction has 224003 states and 368000 transitions. [2023-12-25 08:03:04,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 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) [2023-12-25 08:03:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 224003 states and 368000 transitions. [2023-12-25 08:03:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 08:03:04,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:03:04,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:03:04,861 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 [2023-12-25 08:03:05,044 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 [2023-12-25 08:03:05,045 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:03:05,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:03:05,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1112276346, now seen corresponding path program 1 times [2023-12-25 08:03:05,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:03:05,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35754070] [2023-12-25 08:03:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:03:05,046 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 [2023-12-25 08:03:05,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:03:05,047 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) [2023-12-25 08:03:05,048 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 [2023-12-25 08:03:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:03:05,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:03:05,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:03:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:03:05,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:03:05,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:03:05,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35754070] [2023-12-25 08:03:05,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35754070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:03:05,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:03:05,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:03:05,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330322716] [2023-12-25 08:03:05,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:03:05,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:03:05,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:03:05,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:03:05,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:03:05,304 INFO L87 Difference]: Start difference. First operand 224003 states and 368000 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 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) [2023-12-25 08:03:09,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:03:09,043 INFO L93 Difference]: Finished difference Result 665821 states and 1092708 transitions. [2023-12-25 08:03:09,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:03:09,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 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 135 [2023-12-25 08:03:09,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:03:10,442 INFO L225 Difference]: With dead ends: 665821 [2023-12-25 08:03:10,443 INFO L226 Difference]: Without dead ends: 443041 [2023-12-25 08:03:10,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 08:03:10,611 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 856 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:03:10,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1157 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:03:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443041 states. [2023-12-25 08:03:17,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443041 to 443039. [2023-12-25 08:03:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443039 states, 443038 states have (on average 1.6301400782777098) internal successors, (722214), 443038 states have internal predecessors, (722214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:03:19,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443039 states to 443039 states and 722214 transitions. [2023-12-25 08:03:19,017 INFO L78 Accepts]: Start accepts. Automaton has 443039 states and 722214 transitions. Word has length 135 [2023-12-25 08:03:19,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:03:19,018 INFO L495 AbstractCegarLoop]: Abstraction has 443039 states and 722214 transitions. [2023-12-25 08:03:19,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 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) [2023-12-25 08:03:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand 443039 states and 722214 transitions. [2023-12-25 08:03:19,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 08:03:19,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:03:19,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:03:19,510 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 (17)] Ended with exit code 0 [2023-12-25 08:03:19,703 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 [2023-12-25 08:03:19,704 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:03:19,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:03:19,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1769362687, now seen corresponding path program 1 times [2023-12-25 08:03:19,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:03:19,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688561770] [2023-12-25 08:03:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:03:19,705 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 [2023-12-25 08:03:19,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:03:19,706 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) [2023-12-25 08:03:19,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 08:03:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:03:19,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:03:19,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:03:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:03:19,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:03:19,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:03:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688561770] [2023-12-25 08:03:19,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688561770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:03:19,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:03:19,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:03:19,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851147731] [2023-12-25 08:03:19,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:03:19,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:03:19,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:03:19,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:03:19,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:03:19,824 INFO L87 Difference]: Start difference. First operand 443039 states and 722214 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:03:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:03:25,266 INFO L93 Difference]: Finished difference Result 1049187 states and 1723208 transitions. [2023-12-25 08:03:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 08:03:25,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-25 08:03:25,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:03:28,181 INFO L225 Difference]: With dead ends: 1049187 [2023-12-25 08:03:28,182 INFO L226 Difference]: Without dead ends: 648081 [2023-12-25 08:03:28,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:03:28,500 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 169 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:03:28,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 974 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:03:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648081 states. [2023-12-25 08:03:38,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648081 to 630175. [2023-12-25 08:03:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630175 states, 630174 states have (on average 1.6188132166671427) internal successors, (1020134), 630174 states have internal predecessors, (1020134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:03:41,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630175 states to 630175 states and 1020134 transitions. [2023-12-25 08:03:41,426 INFO L78 Accepts]: Start accepts. Automaton has 630175 states and 1020134 transitions. Word has length 136 [2023-12-25 08:03:41,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:03:41,426 INFO L495 AbstractCegarLoop]: Abstraction has 630175 states and 1020134 transitions. [2023-12-25 08:03:41,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:03:41,426 INFO L276 IsEmpty]: Start isEmpty. Operand 630175 states and 1020134 transitions. [2023-12-25 08:03:41,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 08:03:41,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:03:41,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:03:41,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-25 08:03:41,697 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 [2023-12-25 08:03:41,698 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:03:41,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:03:41,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1511197249, now seen corresponding path program 1 times [2023-12-25 08:03:41,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:03:41,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493590085] [2023-12-25 08:03:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:03:41,701 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 [2023-12-25 08:03:41,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:03:41,702 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) [2023-12-25 08:03:41,704 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 [2023-12-25 08:03:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:03:41,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 08:03:41,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:03:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:03:41,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:03:41,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:03:41,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493590085] [2023-12-25 08:03:41,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493590085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:03:41,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:03:41,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:03:41,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45171816] [2023-12-25 08:03:41,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:03:41,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 08:03:41,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:03:41,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 08:03:41,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 08:03:41,968 INFO L87 Difference]: Start difference. First operand 630175 states and 1020134 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:03:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:03:54,222 INFO L93 Difference]: Finished difference Result 1824285 states and 2950962 transitions. [2023-12-25 08:03:54,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 08:03:54,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-25 08:03:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:03:59,138 INFO L225 Difference]: With dead ends: 1824285 [2023-12-25 08:03:59,139 INFO L226 Difference]: Without dead ends: 1196291 [2023-12-25 08:03:59,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 08:03:59,598 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 834 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 08:03:59,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1149 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 08:04:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196291 states. [2023-12-25 08:04:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196291 to 1196289. [2023-12-25 08:04:22,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196289 states, 1196288 states have (on average 1.601096057136743) internal successors, (1915372), 1196288 states have internal predecessors, (1915372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:04:30,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196289 states to 1196289 states and 1915372 transitions. [2023-12-25 08:04:30,544 INFO L78 Accepts]: Start accepts. Automaton has 1196289 states and 1915372 transitions. Word has length 136 [2023-12-25 08:04:30,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:04:30,544 INFO L495 AbstractCegarLoop]: Abstraction has 1196289 states and 1915372 transitions. [2023-12-25 08:04:30,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:04:30,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1196289 states and 1915372 transitions. [2023-12-25 08:04:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-25 08:04:30,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:04:30,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:04:30,696 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 [2023-12-25 08:04:30,890 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 [2023-12-25 08:04:30,890 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:04:30,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:04:30,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1406453763, now seen corresponding path program 1 times [2023-12-25 08:04:30,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:04:30,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029618666] [2023-12-25 08:04:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:04:30,891 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 [2023-12-25 08:04:30,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:04:30,893 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) [2023-12-25 08:04:30,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 08:04:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:04:30,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 08:04:30,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:04:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:04:31,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 08:04:31,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:04:31,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029618666] [2023-12-25 08:04:31,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029618666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 08:04:31,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 08:04:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 08:04:31,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989250789] [2023-12-25 08:04:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 08:04:31,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 08:04:31,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:04:31,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 08:04:31,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 08:04:31,049 INFO L87 Difference]: Start difference. First operand 1196289 states and 1915372 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)