/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 01:49:49,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 01:49:49,903 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 01:49:49,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 01:49:49,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 01:49:49,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 01:49:49,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 01:49:49,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 01:49:49,922 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 01:49:49,922 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 01:49:49,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 01:49:49,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 01:49:49,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 01:49:49,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 01:49:49,924 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 01:49:49,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 01:49:49,924 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 01:49:49,924 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 01:49:49,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 01:49:49,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 01:49:49,925 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 01:49:49,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 01:49:49,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 01:49:49,936 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 01:49:49,937 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 01:49:49,937 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 01:49:49,937 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 01:49:49,937 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 01:49:49,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 01:49:49,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 01:49:49,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 01:49:49,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 01:49:49,938 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 01:49:49,938 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 01:49:49,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 01:49:49,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 01:49:49,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 01:49:49,939 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 01:49:49,939 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 01:49:49,939 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 01:49:49,939 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 01:49:49,939 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 01:49:49,939 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 01:49:49,939 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 01:49:49,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 01:49:49,940 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 01:49:49,940 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 01:49:50,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 01:49:50,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 01:49:50,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 01:49:50,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 01:49:50,105 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 01:49:50,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-22 01:49:51,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 01:49:51,487 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 01:49:51,487 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-22 01:49:51,516 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/961f9975f/2b6cf0cf0bd94c1babe67930769de470/FLAG696c0ac95 [2023-12-22 01:49:51,529 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/961f9975f/2b6cf0cf0bd94c1babe67930769de470 [2023-12-22 01:49:51,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 01:49:51,531 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 01:49:51,532 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 01:49:51,532 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 01:49:51,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 01:49:51,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:51" (1/1) ... [2023-12-22 01:49:51,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7e0b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:51, skipping insertion in model container [2023-12-22 01:49:51,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:51" (1/1) ... [2023-12-22 01:49:51,623 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 01:49:51,965 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c[20491,20504] [2023-12-22 01:49:52,036 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c[26046,26059] [2023-12-22 01:49:52,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 01:49:52,648 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 01:49:52,681 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c[20491,20504] [2023-12-22 01:49:52,696 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c[26046,26059] [2023-12-22 01:49:53,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 01:49:53,068 INFO L206 MainTranslator]: Completed translation [2023-12-22 01:49:53,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53 WrapperNode [2023-12-22 01:49:53,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 01:49:53,072 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 01:49:53,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 01:49:53,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 01:49:53,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,238 INFO L138 Inliner]: procedures = 40, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5183 [2023-12-22 01:49:53,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 01:49:53,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 01:49:53,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 01:49:53,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 01:49:53,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,364 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-22 01:49:53,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,495 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 01:49:53,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 01:49:53,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 01:49:53,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 01:49:53,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (1/1) ... [2023-12-22 01:49:53,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 01:49:53,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 01:49:53,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-22 01:49:53,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-22 01:49:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 01:49:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 01:49:53,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 01:49:53,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 01:49:53,762 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 01:49:53,763 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 01:50:20,895 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 01:50:20,933 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 01:50:20,934 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-22 01:50:20,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:50:20 BoogieIcfgContainer [2023-12-22 01:50:20,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 01:50:20,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 01:50:20,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 01:50:20,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 01:50:20,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:49:51" (1/3) ... [2023-12-22 01:50:20,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c5bc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:50:20, skipping insertion in model container [2023-12-22 01:50:20,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:53" (2/3) ... [2023-12-22 01:50:20,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c5bc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:50:20, skipping insertion in model container [2023-12-22 01:50:20,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:50:20" (3/3) ... [2023-12-22 01:50:20,940 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-22 01:50:20,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 01:50:20,952 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 01:50:21,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 01:50:21,016 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;@317d9622, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 01:50:21,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 01:50:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:21,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-22 01:50:21,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:21,033 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] [2023-12-22 01:50:21,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:21,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash 432878927, now seen corresponding path program 1 times [2023-12-22 01:50:21,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:21,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427757774] [2023-12-22 01:50:21,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:21,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:50:21,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:21,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:50:21,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 01:50:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:21,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 01:50:21,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:21,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:21,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:21,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427757774] [2023-12-22 01:50:21,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427757774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:21,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:21,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:50:21,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543788919] [2023-12-22 01:50:21,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:21,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 01:50:21,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:21,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 01:50:21,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 01:50:21,232 INFO L87 Difference]: Start difference. First operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 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 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:21,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:21,314 INFO L93 Difference]: Finished difference Result 1679 states and 3299 transitions. [2023-12-22 01:50:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 01:50:21,330 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-22 01:50:21,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:21,351 INFO L225 Difference]: With dead ends: 1679 [2023-12-22 01:50:21,352 INFO L226 Difference]: Without dead ends: 863 [2023-12-22 01:50:21,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 01:50:21,361 INFO L413 NwaCegarLoop]: 1631 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, 1631 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 [2023-12-22 01:50:21,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1631 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:50:21,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-12-22 01:50:21,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2023-12-22 01:50:21,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8954703832752613) internal successors, (1632), 862 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1632 transitions. [2023-12-22 01:50:21,424 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1632 transitions. Word has length 25 [2023-12-22 01:50:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:21,424 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1632 transitions. [2023-12-22 01:50:21,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1632 transitions. [2023-12-22 01:50:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-22 01:50:21,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:21,425 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] [2023-12-22 01:50:21,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 01:50:21,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:50:21,636 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:21,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:21,637 INFO L85 PathProgramCache]: Analyzing trace with hash 855580753, now seen corresponding path program 1 times [2023-12-22 01:50:21,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:21,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910798857] [2023-12-22 01:50:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:21,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:50:21,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:21,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:50:21,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 01:50:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:21,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:50:21,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:21,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:21,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:21,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910798857] [2023-12-22 01:50:21,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910798857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:21,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:21,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 01:50:21,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968509108] [2023-12-22 01:50:21,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:21,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 01:50:21,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:21,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 01:50:21,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:50:21,810 INFO L87 Difference]: Start difference. First operand 863 states and 1632 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:50:21,911 INFO L93 Difference]: Finished difference Result 921 states and 1724 transitions. [2023-12-22 01:50:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 01:50:21,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-22 01:50:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:50:21,915 INFO L225 Difference]: With dead ends: 921 [2023-12-22 01:50:21,915 INFO L226 Difference]: Without dead ends: 863 [2023-12-22 01:50:21,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:50:21,917 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:50:21,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4833 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 01:50:21,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-12-22 01:50:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2023-12-22 01:50:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8373983739837398) internal successors, (1582), 862 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:21,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1582 transitions. [2023-12-22 01:50:21,932 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1582 transitions. Word has length 25 [2023-12-22 01:50:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:50:21,932 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1582 transitions. [2023-12-22 01:50:21,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:50:21,933 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1582 transitions. [2023-12-22 01:50:21,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-22 01:50:21,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:50:21,934 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] [2023-12-22 01:50:21,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 01:50:22,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:50:22,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:50:22,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:50:22,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2074254863, now seen corresponding path program 1 times [2023-12-22 01:50:22,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:50:22,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407598590] [2023-12-22 01:50:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:50:22,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:50:22,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:50:22,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:50:22,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-22 01:50:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:50:22,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:50:22,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:50:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:50:22,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:50:22,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:50:22,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407598590] [2023-12-22 01:50:22,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407598590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:50:22,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:50:22,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:50:22,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112331026] [2023-12-22 01:50:22,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:50:22,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:50:22,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:50:22,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:50:22,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:50:22,275 INFO L87 Difference]: Start difference. First operand 863 states and 1582 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:00,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:00,170 INFO L93 Difference]: Finished difference Result 2367 states and 4455 transitions. [2023-12-22 01:51:00,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:00,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-22 01:51:00,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:00,176 INFO L225 Difference]: With dead ends: 2367 [2023-12-22 01:51:00,176 INFO L226 Difference]: Without dead ends: 1614 [2023-12-22 01:51:00,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:00,178 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 914 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:00,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 568 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 37.7s Time] [2023-12-22 01:51:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2023-12-22 01:51:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2023-12-22 01:51:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1612 states have (on average 1.61848635235732) internal successors, (2609), 1613 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2609 transitions. [2023-12-22 01:51:00,217 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2609 transitions. Word has length 47 [2023-12-22 01:51:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:00,218 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2609 transitions. [2023-12-22 01:51:00,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2609 transitions. [2023-12-22 01:51:00,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-22 01:51:00,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:00,226 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] [2023-12-22 01:51:00,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-22 01:51:00,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:00,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:00,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:00,433 INFO L85 PathProgramCache]: Analyzing trace with hash 298685240, now seen corresponding path program 1 times [2023-12-22 01:51:00,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:00,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053549383] [2023-12-22 01:51:00,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:00,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:00,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:00,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:00,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 01:51:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:00,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 01:51:00,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:02,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:02,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:02,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053549383] [2023-12-22 01:51:02,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053549383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:02,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:02,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 01:51:02,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840065839] [2023-12-22 01:51:02,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:02,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 01:51:02,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:02,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 01:51:02,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 01:51:02,221 INFO L87 Difference]: Start difference. First operand 1614 states and 2609 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 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) [2023-12-22 01:51:02,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:02,582 INFO L93 Difference]: Finished difference Result 2054 states and 3321 transitions. [2023-12-22 01:51:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 01:51:02,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 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 [2023-12-22 01:51:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:02,590 INFO L225 Difference]: With dead ends: 2054 [2023-12-22 01:51:02,591 INFO L226 Difference]: Without dead ends: 1999 [2023-12-22 01:51:02,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 01:51:02,595 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 6540 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6540 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:02,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6540 Valid, 2308 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 01:51:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2023-12-22 01:51:02,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1720. [2023-12-22 01:51:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.6193247962747381) internal successors, (2782), 1719 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2782 transitions. [2023-12-22 01:51:02,631 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2782 transitions. Word has length 74 [2023-12-22 01:51:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:02,632 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2782 transitions. [2023-12-22 01:51:02,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 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) [2023-12-22 01:51:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2782 transitions. [2023-12-22 01:51:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-22 01:51:02,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:02,634 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] [2023-12-22 01:51:02,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:02,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:02,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:02,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:02,836 INFO L85 PathProgramCache]: Analyzing trace with hash -850818584, now seen corresponding path program 1 times [2023-12-22 01:51:02,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:02,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842580794] [2023-12-22 01:51:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:02,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:02,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:02,853 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:02,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 01:51:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:02,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:02,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:03,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:03,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:03,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842580794] [2023-12-22 01:51:03,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842580794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:03,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:03,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:03,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475232660] [2023-12-22 01:51:03,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:03,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:03,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:03,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:03,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:03,056 INFO L87 Difference]: Start difference. First operand 1720 states and 2782 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:03,132 INFO L93 Difference]: Finished difference Result 2026 states and 3278 transitions. [2023-12-22 01:51:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:03,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-22 01:51:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:03,139 INFO L225 Difference]: With dead ends: 2026 [2023-12-22 01:51:03,139 INFO L226 Difference]: Without dead ends: 1865 [2023-12-22 01:51:03,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:03,140 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1498 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:03,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1656 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 01:51:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2023-12-22 01:51:03,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1860. [2023-12-22 01:51:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1858 states have (on average 1.6167922497308935) internal successors, (3004), 1859 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 3004 transitions. [2023-12-22 01:51:03,178 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 3004 transitions. Word has length 76 [2023-12-22 01:51:03,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:03,180 INFO L495 AbstractCegarLoop]: Abstraction has 1860 states and 3004 transitions. [2023-12-22 01:51:03,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:03,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 3004 transitions. [2023-12-22 01:51:03,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-22 01:51:03,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:03,181 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] [2023-12-22 01:51:03,201 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 [2023-12-22 01:51:03,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:03,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:03,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:03,386 INFO L85 PathProgramCache]: Analyzing trace with hash -667490992, now seen corresponding path program 1 times [2023-12-22 01:51:03,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:03,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631227074] [2023-12-22 01:51:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:03,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:03,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:03,387 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:03,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 01:51:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:03,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:51:03,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:03,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:03,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631227074] [2023-12-22 01:51:03,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631227074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:03,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:03,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 01:51:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298089301] [2023-12-22 01:51:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:03,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 01:51:03,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 01:51:03,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:51:03,502 INFO L87 Difference]: Start difference. First operand 1860 states and 3004 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:03,552 INFO L93 Difference]: Finished difference Result 1874 states and 3021 transitions. [2023-12-22 01:51:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 01:51:03,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-22 01:51:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:03,559 INFO L225 Difference]: With dead ends: 1874 [2023-12-22 01:51:03,559 INFO L226 Difference]: Without dead ends: 1872 [2023-12-22 01:51:03,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:51:03,560 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 1 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4726 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:03,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4726 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2023-12-22 01:51:03,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1868. [2023-12-22 01:51:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1866 states have (on average 1.6136120042872455) internal successors, (3011), 1867 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:03,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 3011 transitions. [2023-12-22 01:51:03,587 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 3011 transitions. Word has length 77 [2023-12-22 01:51:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:03,587 INFO L495 AbstractCegarLoop]: Abstraction has 1868 states and 3011 transitions. [2023-12-22 01:51:03,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 3011 transitions. [2023-12-22 01:51:03,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:51:03,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:03,588 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] [2023-12-22 01:51:03,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-22 01:51:03,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:03,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:03,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash 120183744, now seen corresponding path program 1 times [2023-12-22 01:51:03,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:03,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124403393] [2023-12-22 01:51:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:03,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:03,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:03,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:03,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-22 01:51:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:03,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:03,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:03,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:03,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:03,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124403393] [2023-12-22 01:51:03,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124403393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:03,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:03,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:03,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206936228] [2023-12-22 01:51:03,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:03,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:03,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:03,967 INFO L87 Difference]: Start difference. First operand 1868 states and 3011 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:04,000 INFO L93 Difference]: Finished difference Result 2462 states and 3951 transitions. [2023-12-22 01:51:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:04,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:51:04,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:04,006 INFO L225 Difference]: With dead ends: 2462 [2023-12-22 01:51:04,006 INFO L226 Difference]: Without dead ends: 2153 [2023-12-22 01:51:04,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:04,007 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1515 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:04,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:04,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2023-12-22 01:51:04,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2151. [2023-12-22 01:51:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2149 states have (on average 1.60679385760819) internal successors, (3453), 2150 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3453 transitions. [2023-12-22 01:51:04,035 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3453 transitions. Word has length 78 [2023-12-22 01:51:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:04,035 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 3453 transitions. [2023-12-22 01:51:04,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3453 transitions. [2023-12-22 01:51:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:51:04,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:04,036 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] [2023-12-22 01:51:04,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:04,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:04,239 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:04,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:04,240 INFO L85 PathProgramCache]: Analyzing trace with hash -290202944, now seen corresponding path program 1 times [2023-12-22 01:51:04,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:04,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971810427] [2023-12-22 01:51:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:04,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:04,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:04,241 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:04,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-22 01:51:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:04,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:04,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:04,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:04,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:04,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971810427] [2023-12-22 01:51:04,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971810427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:04,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:04,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655333797] [2023-12-22 01:51:04,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:04,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:04,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:04,395 INFO L87 Difference]: Start difference. First operand 2151 states and 3453 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:04,440 INFO L93 Difference]: Finished difference Result 3287 states and 5235 transitions. [2023-12-22 01:51:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:04,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:51:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:04,448 INFO L225 Difference]: With dead ends: 3287 [2023-12-22 01:51:04,449 INFO L226 Difference]: Without dead ends: 2695 [2023-12-22 01:51:04,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:04,451 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1513 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:04,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:04,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2023-12-22 01:51:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2693. [2023-12-22 01:51:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 2691 states have (on average 1.5938312894834634) internal successors, (4289), 2692 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 4289 transitions. [2023-12-22 01:51:04,495 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 4289 transitions. Word has length 78 [2023-12-22 01:51:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:04,495 INFO L495 AbstractCegarLoop]: Abstraction has 2693 states and 4289 transitions. [2023-12-22 01:51:04,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 4289 transitions. [2023-12-22 01:51:04,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:51:04,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:04,496 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] [2023-12-22 01:51:04,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:04,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:04,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:04,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash -518842176, now seen corresponding path program 1 times [2023-12-22 01:51:04,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:04,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073766413] [2023-12-22 01:51:04,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:04,701 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 [2023-12-22 01:51:04,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:04,702 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:04,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-22 01:51:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:04,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:04,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:04,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:04,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073766413] [2023-12-22 01:51:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073766413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:04,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:04,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:04,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891225058] [2023-12-22 01:51:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:04,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:04,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:04,866 INFO L87 Difference]: Start difference. First operand 2693 states and 4289 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:04,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:04,952 INFO L93 Difference]: Finished difference Result 4865 states and 7659 transitions. [2023-12-22 01:51:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:04,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:51:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:04,963 INFO L225 Difference]: With dead ends: 4865 [2023-12-22 01:51:04,963 INFO L226 Difference]: Without dead ends: 3731 [2023-12-22 01:51:04,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:04,967 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1509 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:04,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2023-12-22 01:51:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3729. [2023-12-22 01:51:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3729 states, 3727 states have (on average 1.5736517306144353) internal successors, (5865), 3728 states have internal predecessors, (5865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:05,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 5865 transitions. [2023-12-22 01:51:05,032 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 5865 transitions. Word has length 78 [2023-12-22 01:51:05,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:05,033 INFO L495 AbstractCegarLoop]: Abstraction has 3729 states and 5865 transitions. [2023-12-22 01:51:05,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:05,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 5865 transitions. [2023-12-22 01:51:05,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:51:05,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:05,034 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] [2023-12-22 01:51:05,044 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 (10)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:05,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:05,238 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:05,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:05,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1144498240, now seen corresponding path program 1 times [2023-12-22 01:51:05,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:05,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387008879] [2023-12-22 01:51:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:05,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:05,243 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:05,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-22 01:51:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:05,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:05,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:05,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:05,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:05,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387008879] [2023-12-22 01:51:05,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387008879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:05,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:05,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:05,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164141321] [2023-12-22 01:51:05,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:05,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:05,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:05,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:05,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:05,403 INFO L87 Difference]: Start difference. First operand 3729 states and 5865 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:05,458 INFO L93 Difference]: Finished difference Result 7877 states and 12219 transitions. [2023-12-22 01:51:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:05,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:51:05,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:05,478 INFO L225 Difference]: With dead ends: 7877 [2023-12-22 01:51:05,478 INFO L226 Difference]: Without dead ends: 5707 [2023-12-22 01:51:05,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:05,483 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 1507 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:05,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2023-12-22 01:51:05,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5705. [2023-12-22 01:51:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 5703 states have (on average 1.5474311765737332) internal successors, (8825), 5704 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 8825 transitions. [2023-12-22 01:51:05,568 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 8825 transitions. Word has length 78 [2023-12-22 01:51:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:05,568 INFO L495 AbstractCegarLoop]: Abstraction has 5705 states and 8825 transitions. [2023-12-22 01:51:05,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 8825 transitions. [2023-12-22 01:51:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:51:05,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:05,569 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] [2023-12-22 01:51:05,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:05,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:05,772 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:05,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash -255764800, now seen corresponding path program 1 times [2023-12-22 01:51:05,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:05,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190929020] [2023-12-22 01:51:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:05,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:05,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:05,775 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:05,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 01:51:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:05,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:05,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:05,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:05,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:05,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190929020] [2023-12-22 01:51:05,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190929020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:05,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:05,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:05,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735958316] [2023-12-22 01:51:05,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:05,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:05,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:05,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:05,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:05,943 INFO L87 Difference]: Start difference. First operand 5705 states and 8825 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:06,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:06,027 INFO L93 Difference]: Finished difference Result 13613 states and 20763 transitions. [2023-12-22 01:51:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:06,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:51:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:06,047 INFO L225 Difference]: With dead ends: 13613 [2023-12-22 01:51:06,048 INFO L226 Difference]: Without dead ends: 9467 [2023-12-22 01:51:06,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:06,054 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1505 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:06,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:06,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2023-12-22 01:51:06,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 9465. [2023-12-22 01:51:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9465 states, 9463 states have (on average 1.5175948430730213) internal successors, (14361), 9464 states have internal predecessors, (14361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9465 states to 9465 states and 14361 transitions. [2023-12-22 01:51:06,308 INFO L78 Accepts]: Start accepts. Automaton has 9465 states and 14361 transitions. Word has length 78 [2023-12-22 01:51:06,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:06,308 INFO L495 AbstractCegarLoop]: Abstraction has 9465 states and 14361 transitions. [2023-12-22 01:51:06,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 9465 states and 14361 transitions. [2023-12-22 01:51:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 01:51:06,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:06,310 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] [2023-12-22 01:51:06,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:06,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:06,513 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:06,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:06,514 INFO L85 PathProgramCache]: Analyzing trace with hash -558786112, now seen corresponding path program 1 times [2023-12-22 01:51:06,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:06,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960036507] [2023-12-22 01:51:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:06,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:06,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:06,515 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:06,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-22 01:51:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:06,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:06,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:06,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:06,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:06,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960036507] [2023-12-22 01:51:06,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960036507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:06,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:06,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:06,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631107515] [2023-12-22 01:51:06,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:06,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:06,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:06,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:06,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:06,652 INFO L87 Difference]: Start difference. First operand 9465 states and 14361 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:06,788 INFO L93 Difference]: Finished difference Result 24509 states and 36699 transitions. [2023-12-22 01:51:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:06,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 01:51:06,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:06,819 INFO L225 Difference]: With dead ends: 24509 [2023-12-22 01:51:06,819 INFO L226 Difference]: Without dead ends: 16603 [2023-12-22 01:51:06,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:06,832 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1511 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:06,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1741 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:06,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16603 states. [2023-12-22 01:51:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16603 to 16601. [2023-12-22 01:51:07,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16601 states, 16599 states have (on average 1.4859328875233448) internal successors, (24665), 16600 states have internal predecessors, (24665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16601 states to 16601 states and 24665 transitions. [2023-12-22 01:51:07,181 INFO L78 Accepts]: Start accepts. Automaton has 16601 states and 24665 transitions. Word has length 78 [2023-12-22 01:51:07,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:07,181 INFO L495 AbstractCegarLoop]: Abstraction has 16601 states and 24665 transitions. [2023-12-22 01:51:07,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:07,182 INFO L276 IsEmpty]: Start isEmpty. Operand 16601 states and 24665 transitions. [2023-12-22 01:51:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-22 01:51:07,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:07,182 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] [2023-12-22 01:51:07,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:07,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:07,386 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:07,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:07,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1755433563, now seen corresponding path program 1 times [2023-12-22 01:51:07,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:07,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62503225] [2023-12-22 01:51:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:07,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:07,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:07,388 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:07,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-22 01:51:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:07,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:07,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:07,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:07,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62503225] [2023-12-22 01:51:07,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62503225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:07,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:07,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833126956] [2023-12-22 01:51:07,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:07,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:07,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:07,528 INFO L87 Difference]: Start difference. First operand 16601 states and 24665 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:07,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:07,705 INFO L93 Difference]: Finished difference Result 31968 states and 47711 transitions. [2023-12-22 01:51:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:07,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-22 01:51:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:07,738 INFO L225 Difference]: With dead ends: 31968 [2023-12-22 01:51:07,738 INFO L226 Difference]: Without dead ends: 23709 [2023-12-22 01:51:07,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:07,754 INFO L413 NwaCegarLoop]: 1649 mSDtfsCounter, 1514 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:07,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:07,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23709 states. [2023-12-22 01:51:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23709 to 23707. [2023-12-22 01:51:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23707 states, 23705 states have (on average 1.4779582366589328) internal successors, (35035), 23706 states have internal predecessors, (35035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23707 states to 23707 states and 35035 transitions. [2023-12-22 01:51:08,192 INFO L78 Accepts]: Start accepts. Automaton has 23707 states and 35035 transitions. Word has length 80 [2023-12-22 01:51:08,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:08,192 INFO L495 AbstractCegarLoop]: Abstraction has 23707 states and 35035 transitions. [2023-12-22 01:51:08,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 23707 states and 35035 transitions. [2023-12-22 01:51:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-22 01:51:08,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:08,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:08,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:08,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:08,399 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:08,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:08,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1702210325, now seen corresponding path program 1 times [2023-12-22 01:51:08,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:08,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238078012] [2023-12-22 01:51:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:08,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:08,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:08,402 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:08,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 01:51:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:08,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:08,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:08,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:08,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:08,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238078012] [2023-12-22 01:51:08,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238078012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:08,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:08,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:08,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460589583] [2023-12-22 01:51:08,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:08,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:08,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:08,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:08,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:08,532 INFO L87 Difference]: Start difference. First operand 23707 states and 35035 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:08,761 INFO L93 Difference]: Finished difference Result 39094 states and 57909 transitions. [2023-12-22 01:51:08,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:08,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-12-22 01:51:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:08,779 INFO L225 Difference]: With dead ends: 39094 [2023-12-22 01:51:08,779 INFO L226 Difference]: Without dead ends: 16948 [2023-12-22 01:51:08,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:08,794 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 66 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:08,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 3200 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:08,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16948 states. [2023-12-22 01:51:08,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16948 to 16946. [2023-12-22 01:51:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16946 states, 16944 states have (on average 1.4873701605288008) internal successors, (25202), 16945 states have internal predecessors, (25202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16946 states to 16946 states and 25202 transitions. [2023-12-22 01:51:09,016 INFO L78 Accepts]: Start accepts. Automaton has 16946 states and 25202 transitions. Word has length 100 [2023-12-22 01:51:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:09,016 INFO L495 AbstractCegarLoop]: Abstraction has 16946 states and 25202 transitions. [2023-12-22 01:51:09,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 16946 states and 25202 transitions. [2023-12-22 01:51:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-22 01:51:09,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:09,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:09,022 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 (15)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:09,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:09,222 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:09,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:09,222 INFO L85 PathProgramCache]: Analyzing trace with hash -729477104, now seen corresponding path program 1 times [2023-12-22 01:51:09,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:09,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041735266] [2023-12-22 01:51:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:09,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:09,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:09,224 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:09,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-22 01:51:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:09,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:51:09,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:10,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:51:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:10,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:10,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041735266] [2023-12-22 01:51:10,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041735266] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:51:10,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:51:10,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:51:10,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569468913] [2023-12-22 01:51:10,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:51:10,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:51:10,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:10,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:51:10,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:51:10,633 INFO L87 Difference]: Start difference. First operand 16946 states and 25202 transitions. Second operand has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:13,298 INFO L93 Difference]: Finished difference Result 58140 states and 85207 transitions. [2023-12-22 01:51:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:51:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 states have internal predecessors, (186), 0 states have call successors, (0), 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 102 [2023-12-22 01:51:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:13,346 INFO L225 Difference]: With dead ends: 58140 [2023-12-22 01:51:13,346 INFO L226 Difference]: Without dead ends: 42778 [2023-12-22 01:51:13,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-22 01:51:13,368 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 7001 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7001 SdHoareTripleChecker+Valid, 12834 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:13,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7001 Valid, 12834 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-22 01:51:13,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42778 states. [2023-12-22 01:51:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42778 to 32306. [2023-12-22 01:51:14,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32306 states, 32304 states have (on average 1.4755448241703815) internal successors, (47666), 32305 states have internal predecessors, (47666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32306 states to 32306 states and 47666 transitions. [2023-12-22 01:51:14,141 INFO L78 Accepts]: Start accepts. Automaton has 32306 states and 47666 transitions. Word has length 102 [2023-12-22 01:51:14,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:14,142 INFO L495 AbstractCegarLoop]: Abstraction has 32306 states and 47666 transitions. [2023-12-22 01:51:14,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:14,142 INFO L276 IsEmpty]: Start isEmpty. Operand 32306 states and 47666 transitions. [2023-12-22 01:51:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-22 01:51:14,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:14,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:14,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:14,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:14,349 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:14,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:14,350 INFO L85 PathProgramCache]: Analyzing trace with hash -433432096, now seen corresponding path program 1 times [2023-12-22 01:51:14,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:14,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830018774] [2023-12-22 01:51:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:14,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:14,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:14,352 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:14,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 01:51:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:14,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:14,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:14,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:14,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:14,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830018774] [2023-12-22 01:51:14,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830018774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:14,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:14,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:14,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421037118] [2023-12-22 01:51:14,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:14,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:14,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:14,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:14,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:14,504 INFO L87 Difference]: Start difference. First operand 32306 states and 47666 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:14,836 INFO L93 Difference]: Finished difference Result 47670 states and 70228 transitions. [2023-12-22 01:51:14,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:14,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-22 01:51:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:14,856 INFO L225 Difference]: With dead ends: 47670 [2023-12-22 01:51:14,856 INFO L226 Difference]: Without dead ends: 16948 [2023-12-22 01:51:14,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:14,868 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 60 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:14,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3185 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16948 states. [2023-12-22 01:51:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16948 to 16946. [2023-12-22 01:51:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16946 states, 16944 states have (on average 1.4703729933899905) internal successors, (24914), 16945 states have internal predecessors, (24914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16946 states to 16946 states and 24914 transitions. [2023-12-22 01:51:15,274 INFO L78 Accepts]: Start accepts. Automaton has 16946 states and 24914 transitions. Word has length 104 [2023-12-22 01:51:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:15,274 INFO L495 AbstractCegarLoop]: Abstraction has 16946 states and 24914 transitions. [2023-12-22 01:51:15,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 16946 states and 24914 transitions. [2023-12-22 01:51:15,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-22 01:51:15,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:15,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:15,280 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 [2023-12-22 01:51:15,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:15,480 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:15,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:15,480 INFO L85 PathProgramCache]: Analyzing trace with hash 382842737, now seen corresponding path program 1 times [2023-12-22 01:51:15,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:15,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627492093] [2023-12-22 01:51:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:15,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:15,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:15,482 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:15,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-22 01:51:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:15,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:51:15,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:16,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:51:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:17,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:17,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627492093] [2023-12-22 01:51:17,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627492093] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:51:17,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:51:17,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:51:17,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229736618] [2023-12-22 01:51:17,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:51:17,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:51:17,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:17,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:51:17,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:51:17,106 INFO L87 Difference]: Start difference. First operand 16946 states and 24914 transitions. Second operand has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:18,207 INFO L93 Difference]: Finished difference Result 32704 states and 47683 transitions. [2023-12-22 01:51:18,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 01:51:18,208 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-22 01:51:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:18,229 INFO L225 Difference]: With dead ends: 32704 [2023-12-22 01:51:18,230 INFO L226 Difference]: Without dead ends: 17342 [2023-12-22 01:51:18,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2023-12-22 01:51:18,244 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 3222 mSDsluCounter, 10729 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3222 SdHoareTripleChecker+Valid, 12252 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:18,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3222 Valid, 12252 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 01:51:18,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17342 states. [2023-12-22 01:51:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17342 to 16956. [2023-12-22 01:51:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16956 states, 16954 states have (on average 1.470213518933585) internal successors, (24926), 16955 states have internal predecessors, (24926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16956 states to 16956 states and 24926 transitions. [2023-12-22 01:51:18,633 INFO L78 Accepts]: Start accepts. Automaton has 16956 states and 24926 transitions. Word has length 105 [2023-12-22 01:51:18,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:18,634 INFO L495 AbstractCegarLoop]: Abstraction has 16956 states and 24926 transitions. [2023-12-22 01:51:18,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:18,634 INFO L276 IsEmpty]: Start isEmpty. Operand 16956 states and 24926 transitions. [2023-12-22 01:51:18,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-22 01:51:18,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:18,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:18,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:18,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:18,839 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:18,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:18,840 INFO L85 PathProgramCache]: Analyzing trace with hash -707250355, now seen corresponding path program 1 times [2023-12-22 01:51:18,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:18,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124650190] [2023-12-22 01:51:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:18,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:18,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:18,841 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:18,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-22 01:51:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:18,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:18,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:18,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:18,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:18,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124650190] [2023-12-22 01:51:18,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124650190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:18,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:18,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:18,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445946075] [2023-12-22 01:51:18,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:18,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:18,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:18,998 INFO L87 Difference]: Start difference. First operand 16956 states and 24926 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:19,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:19,151 INFO L93 Difference]: Finished difference Result 24640 states and 36112 transitions. [2023-12-22 01:51:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:19,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-22 01:51:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:19,163 INFO L225 Difference]: With dead ends: 24640 [2023-12-22 01:51:19,164 INFO L226 Difference]: Without dead ends: 9278 [2023-12-22 01:51:19,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:19,175 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 56 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:19,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3170 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9278 states. [2023-12-22 01:51:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9278 to 9276. [2023-12-22 01:51:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9276 states, 9274 states have (on average 1.4714254906189346) internal successors, (13646), 9275 states have internal predecessors, (13646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9276 states to 9276 states and 13646 transitions. [2023-12-22 01:51:19,335 INFO L78 Accepts]: Start accepts. Automaton has 9276 states and 13646 transitions. Word has length 107 [2023-12-22 01:51:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:19,336 INFO L495 AbstractCegarLoop]: Abstraction has 9276 states and 13646 transitions. [2023-12-22 01:51:19,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:19,336 INFO L276 IsEmpty]: Start isEmpty. Operand 9276 states and 13646 transitions. [2023-12-22 01:51:19,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-22 01:51:19,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:19,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:19,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:19,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:19,541 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:19,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash 74024612, now seen corresponding path program 1 times [2023-12-22 01:51:19,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:19,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234140975] [2023-12-22 01:51:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:19,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:19,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:19,543 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:19,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-22 01:51:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:19,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:51:19,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:20,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:51:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:20,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:20,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234140975] [2023-12-22 01:51:20,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234140975] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:51:20,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:51:20,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:51:20,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402005855] [2023-12-22 01:51:20,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:51:20,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:51:20,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:20,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:51:20,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:51:20,963 INFO L87 Difference]: Start difference. First operand 9276 states and 13646 transitions. Second operand has 16 states, 16 states have (on average 12.625) internal successors, (202), 16 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:22,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:22,886 INFO L93 Difference]: Finished difference Result 30500 states and 43986 transitions. [2023-12-22 01:51:22,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:51:22,886 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.625) internal successors, (202), 16 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-22 01:51:22,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:22,913 INFO L225 Difference]: With dead ends: 30500 [2023-12-22 01:51:22,913 INFO L226 Difference]: Without dead ends: 22818 [2023-12-22 01:51:22,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:51:22,932 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 2152 mSDsluCounter, 12660 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 14299 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:22,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2152 Valid, 14299 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 01:51:22,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22818 states. [2023-12-22 01:51:23,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22818 to 17532. [2023-12-22 01:51:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17532 states, 17530 states have (on average 1.4383342840844267) internal successors, (25214), 17531 states have internal predecessors, (25214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17532 states to 17532 states and 25214 transitions. [2023-12-22 01:51:23,408 INFO L78 Accepts]: Start accepts. Automaton has 17532 states and 25214 transitions. Word has length 108 [2023-12-22 01:51:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:23,409 INFO L495 AbstractCegarLoop]: Abstraction has 17532 states and 25214 transitions. [2023-12-22 01:51:23,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.625) internal successors, (202), 16 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 17532 states and 25214 transitions. [2023-12-22 01:51:23,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-22 01:51:23,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:23,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:23,422 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 (20)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:23,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:23,618 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:23,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:23,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1155314444, now seen corresponding path program 1 times [2023-12-22 01:51:23,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:23,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359435110] [2023-12-22 01:51:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:23,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:23,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:23,621 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:23,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-22 01:51:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:23,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:23,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:23,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:23,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:23,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359435110] [2023-12-22 01:51:23,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359435110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:23,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:23,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:23,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731391716] [2023-12-22 01:51:23,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:23,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:23,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:23,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:23,793 INFO L87 Difference]: Start difference. First operand 17532 states and 25214 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:23,987 INFO L93 Difference]: Finished difference Result 25504 states and 36544 transitions. [2023-12-22 01:51:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:23,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-22 01:51:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:23,997 INFO L225 Difference]: With dead ends: 25504 [2023-12-22 01:51:23,997 INFO L226 Difference]: Without dead ends: 9566 [2023-12-22 01:51:24,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:24,008 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 52 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:24,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3155 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:24,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9566 states. [2023-12-22 01:51:24,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9566 to 9564. [2023-12-22 01:51:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9564 states, 9562 states have (on average 1.4421669106881405) internal successors, (13790), 9563 states have internal predecessors, (13790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9564 states to 9564 states and 13790 transitions. [2023-12-22 01:51:24,179 INFO L78 Accepts]: Start accepts. Automaton has 9564 states and 13790 transitions. Word has length 110 [2023-12-22 01:51:24,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:24,179 INFO L495 AbstractCegarLoop]: Abstraction has 9564 states and 13790 transitions. [2023-12-22 01:51:24,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9564 states and 13790 transitions. [2023-12-22 01:51:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-22 01:51:24,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:24,180 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:24,186 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 (21)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:24,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:24,387 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:24,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1710375365, now seen corresponding path program 1 times [2023-12-22 01:51:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:24,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982351191] [2023-12-22 01:51:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:24,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:24,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:24,390 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:24,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-22 01:51:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:24,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:51:24,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:25,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:51:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:25,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:25,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982351191] [2023-12-22 01:51:25,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982351191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:51:25,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:51:25,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:51:25,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093140471] [2023-12-22 01:51:25,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:51:25,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:51:25,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:25,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:51:25,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:51:25,589 INFO L87 Difference]: Start difference. First operand 9564 states and 13790 transitions. Second operand has 16 states, 16 states have (on average 13.125) internal successors, (210), 16 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:27,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:27,508 INFO L93 Difference]: Finished difference Result 30788 states and 43458 transitions. [2023-12-22 01:51:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:51:27,509 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.125) internal successors, (210), 16 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-22 01:51:27,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:27,534 INFO L225 Difference]: With dead ends: 30788 [2023-12-22 01:51:27,535 INFO L226 Difference]: Without dead ends: 22818 [2023-12-22 01:51:27,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:51:27,544 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 3793 mSDsluCounter, 7940 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3793 SdHoareTripleChecker+Valid, 9561 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:27,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3793 Valid, 9561 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 01:51:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22818 states. [2023-12-22 01:51:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22818 to 18108. [2023-12-22 01:51:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18108 states, 18106 states have (on average 1.4084833756765713) internal successors, (25502), 18107 states have internal predecessors, (25502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:27,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18108 states to 18108 states and 25502 transitions. [2023-12-22 01:51:27,953 INFO L78 Accepts]: Start accepts. Automaton has 18108 states and 25502 transitions. Word has length 111 [2023-12-22 01:51:27,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:27,953 INFO L495 AbstractCegarLoop]: Abstraction has 18108 states and 25502 transitions. [2023-12-22 01:51:27,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.125) internal successors, (210), 16 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:27,953 INFO L276 IsEmpty]: Start isEmpty. Operand 18108 states and 25502 transitions. [2023-12-22 01:51:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-22 01:51:27,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:27,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:27,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:28,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:28,158 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:28,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:28,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1230390727, now seen corresponding path program 1 times [2023-12-22 01:51:28,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:28,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901658843] [2023-12-22 01:51:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:28,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:28,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:28,161 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:28,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-22 01:51:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:28,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:28,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:28,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:28,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:28,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901658843] [2023-12-22 01:51:28,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901658843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:28,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:28,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251576770] [2023-12-22 01:51:28,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:28,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:28,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:28,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:28,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:28,344 INFO L87 Difference]: Start difference. First operand 18108 states and 25502 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:28,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:28,525 INFO L93 Difference]: Finished difference Result 26368 states and 36976 transitions. [2023-12-22 01:51:28,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:28,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-22 01:51:28,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:28,537 INFO L225 Difference]: With dead ends: 26368 [2023-12-22 01:51:28,538 INFO L226 Difference]: Without dead ends: 9854 [2023-12-22 01:51:28,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:28,548 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 48 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:28,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:28,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9854 states. [2023-12-22 01:51:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9854 to 9852. [2023-12-22 01:51:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9852 states, 9850 states have (on average 1.4146192893401015) internal successors, (13934), 9851 states have internal predecessors, (13934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9852 states to 9852 states and 13934 transitions. [2023-12-22 01:51:28,793 INFO L78 Accepts]: Start accepts. Automaton has 9852 states and 13934 transitions. Word has length 113 [2023-12-22 01:51:28,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:28,793 INFO L495 AbstractCegarLoop]: Abstraction has 9852 states and 13934 transitions. [2023-12-22 01:51:28,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 9852 states and 13934 transitions. [2023-12-22 01:51:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-22 01:51:28,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:28,795 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:28,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:28,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:28,999 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:28,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash 807903032, now seen corresponding path program 1 times [2023-12-22 01:51:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:28,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420983254] [2023-12-22 01:51:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:29,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:29,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:29,001 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:29,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-22 01:51:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:29,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:51:29,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:30,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:51:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:30,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:30,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420983254] [2023-12-22 01:51:30,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420983254] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:51:30,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:51:30,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:51:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202122403] [2023-12-22 01:51:30,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:51:30,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:51:30,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:30,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:51:30,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:51:30,562 INFO L87 Difference]: Start difference. First operand 9852 states and 13934 transitions. Second operand has 16 states, 16 states have (on average 13.625) internal successors, (218), 16 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:32,589 INFO L93 Difference]: Finished difference Result 31076 states and 42930 transitions. [2023-12-22 01:51:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:51:32,590 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.625) internal successors, (218), 16 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-22 01:51:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:32,614 INFO L225 Difference]: With dead ends: 31076 [2023-12-22 01:51:32,614 INFO L226 Difference]: Without dead ends: 22818 [2023-12-22 01:51:32,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:51:32,623 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 5133 mSDsluCounter, 11002 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5133 SdHoareTripleChecker+Valid, 12605 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:32,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5133 Valid, 12605 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 01:51:32,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22818 states. [2023-12-22 01:51:33,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22818 to 18684. [2023-12-22 01:51:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18684 states, 18682 states have (on average 1.380473182742747) internal successors, (25790), 18683 states have internal predecessors, (25790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18684 states to 18684 states and 25790 transitions. [2023-12-22 01:51:33,071 INFO L78 Accepts]: Start accepts. Automaton has 18684 states and 25790 transitions. Word has length 114 [2023-12-22 01:51:33,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:33,071 INFO L495 AbstractCegarLoop]: Abstraction has 18684 states and 25790 transitions. [2023-12-22 01:51:33,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.625) internal successors, (218), 16 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:33,071 INFO L276 IsEmpty]: Start isEmpty. Operand 18684 states and 25790 transitions. [2023-12-22 01:51:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-22 01:51:33,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:33,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:33,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:33,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:33,277 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:33,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:33,278 INFO L85 PathProgramCache]: Analyzing trace with hash 289651256, now seen corresponding path program 1 times [2023-12-22 01:51:33,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:33,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35993641] [2023-12-22 01:51:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:33,278 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:33,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:33,279 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:33,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-22 01:51:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:33,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:51:33,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:33,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:51:33,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:33,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35993641] [2023-12-22 01:51:33,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35993641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:51:33,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:51:33,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:51:33,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897782757] [2023-12-22 01:51:33,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:51:33,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:51:33,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:33,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:51:33,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:33,483 INFO L87 Difference]: Start difference. First operand 18684 states and 25790 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:33,742 INFO L93 Difference]: Finished difference Result 27232 states and 37408 transitions. [2023-12-22 01:51:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:51:33,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-12-22 01:51:33,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:33,753 INFO L225 Difference]: With dead ends: 27232 [2023-12-22 01:51:33,753 INFO L226 Difference]: Without dead ends: 10142 [2023-12-22 01:51:33,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:51:33,759 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 44 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:33,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3125 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:51:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10142 states. [2023-12-22 01:51:33,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10142 to 10140. [2023-12-22 01:51:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10140 states, 10138 states have (on average 1.3886368119944763) internal successors, (14078), 10139 states have internal predecessors, (14078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10140 states to 10140 states and 14078 transitions. [2023-12-22 01:51:33,963 INFO L78 Accepts]: Start accepts. Automaton has 10140 states and 14078 transitions. Word has length 116 [2023-12-22 01:51:33,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:33,963 INFO L495 AbstractCegarLoop]: Abstraction has 10140 states and 14078 transitions. [2023-12-22 01:51:33,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:33,963 INFO L276 IsEmpty]: Start isEmpty. Operand 10140 states and 14078 transitions. [2023-12-22 01:51:33,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-22 01:51:33,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:33,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:33,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:34,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:34,169 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:34,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:34,169 INFO L85 PathProgramCache]: Analyzing trace with hash 58908185, now seen corresponding path program 1 times [2023-12-22 01:51:34,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:34,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464191870] [2023-12-22 01:51:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:34,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:34,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:34,171 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:34,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-22 01:51:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:34,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:51:34,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:35,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:51:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:35,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:35,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464191870] [2023-12-22 01:51:35,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464191870] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:51:35,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:51:35,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:51:35,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718940290] [2023-12-22 01:51:35,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:51:35,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:51:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:51:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:51:35,550 INFO L87 Difference]: Start difference. First operand 10140 states and 14078 transitions. Second operand has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:51:37,406 INFO L93 Difference]: Finished difference Result 31364 states and 42402 transitions. [2023-12-22 01:51:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:51:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 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 117 [2023-12-22 01:51:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:51:37,436 INFO L225 Difference]: With dead ends: 31364 [2023-12-22 01:51:37,437 INFO L226 Difference]: Without dead ends: 22818 [2023-12-22 01:51:37,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:51:37,448 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 3440 mSDsluCounter, 12529 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3440 SdHoareTripleChecker+Valid, 14114 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:51:37,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3440 Valid, 14114 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 01:51:37,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22818 states. [2023-12-22 01:51:37,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22818 to 19260. [2023-12-22 01:51:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19260 states, 19258 states have (on average 1.354138539827604) internal successors, (26078), 19259 states have internal predecessors, (26078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:38,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19260 states to 19260 states and 26078 transitions. [2023-12-22 01:51:38,013 INFO L78 Accepts]: Start accepts. Automaton has 19260 states and 26078 transitions. Word has length 117 [2023-12-22 01:51:38,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:51:38,014 INFO L495 AbstractCegarLoop]: Abstraction has 19260 states and 26078 transitions. [2023-12-22 01:51:38,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:51:38,014 INFO L276 IsEmpty]: Start isEmpty. Operand 19260 states and 26078 transitions. [2023-12-22 01:51:38,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-22 01:51:38,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:51:38,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:51:38,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-22 01:51:38,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:38,220 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:51:38,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:51:38,220 INFO L85 PathProgramCache]: Analyzing trace with hash -435047532, now seen corresponding path program 1 times [2023-12-22 01:51:38,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:51:38,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927334870] [2023-12-22 01:51:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:51:38,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:51:38,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:51:38,222 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:51:38,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-22 01:51:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:51:38,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:51:38,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:51:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:38,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:51:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:51:39,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:51:39,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927334870] [2023-12-22 01:51:39,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927334870] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:51:39,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:51:39,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 01:51:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418296735] [2023-12-22 01:51:39,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:51:39,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 01:51:39,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:51:39,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 01:51:39,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 01:51:39,450 INFO L87 Difference]: Start difference. First operand 19260 states and 26078 transitions. Second operand has 7 states, 7 states have (on average 32.0) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:28,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:53:28,365 INFO L93 Difference]: Finished difference Result 26094 states and 37440 transitions. [2023-12-22 01:53:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 01:53:28,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-22 01:53:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:53:28,392 INFO L225 Difference]: With dead ends: 26094 [2023-12-22 01:53:28,393 INFO L226 Difference]: Without dead ends: 24590 [2023-12-22 01:53:28,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-22 01:53:28,400 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 6836 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 7856 mSolverCounterSat, 2985 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6836 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 10841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2985 IncrementalHoareTripleChecker+Valid, 7856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:53:28,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6836 Valid, 751 Invalid, 10841 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2985 Valid, 7856 Invalid, 0 Unknown, 0 Unchecked, 108.0s Time] [2023-12-22 01:53:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24590 states. [2023-12-22 01:53:28,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24590 to 23766. [2023-12-22 01:53:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23766 states, 23764 states have (on average 1.328143410200303) internal successors, (31562), 23765 states have internal predecessors, (31562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23766 states to 23766 states and 31562 transitions. [2023-12-22 01:53:29,042 INFO L78 Accepts]: Start accepts. Automaton has 23766 states and 31562 transitions. Word has length 118 [2023-12-22 01:53:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:53:29,042 INFO L495 AbstractCegarLoop]: Abstraction has 23766 states and 31562 transitions. [2023-12-22 01:53:29,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 23766 states and 31562 transitions. [2023-12-22 01:53:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-22 01:53:29,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:53:29,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:53:29,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-22 01:53:29,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:29,247 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:53:29,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:53:29,248 INFO L85 PathProgramCache]: Analyzing trace with hash 492657445, now seen corresponding path program 1 times [2023-12-22 01:53:29,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:53:29,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781586293] [2023-12-22 01:53:29,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:53:29,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:29,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:53:29,253 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:53:29,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-22 01:53:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:53:29,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:53:29,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:53:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:29,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:53:29,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:53:29,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781586293] [2023-12-22 01:53:29,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781586293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:53:29,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:53:29,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:53:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212247594] [2023-12-22 01:53:29,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:53:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:53:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:53:29,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:53:29,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:53:29,427 INFO L87 Difference]: Start difference. First operand 23766 states and 31562 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) [2023-12-22 01:53:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:53:29,730 INFO L93 Difference]: Finished difference Result 32602 states and 43276 transitions. [2023-12-22 01:53:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:53:29,731 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 [2023-12-22 01:53:29,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:53:29,749 INFO L225 Difference]: With dead ends: 32602 [2023-12-22 01:53:29,749 INFO L226 Difference]: Without dead ends: 14936 [2023-12-22 01:53:29,761 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 [2023-12-22 01:53:29,761 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 40 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:53:29,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3110 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:53:29,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14936 states. [2023-12-22 01:53:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14936 to 14934. [2023-12-22 01:53:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14934 states, 14932 states have (on average 1.3165014733458344) internal successors, (19658), 14933 states have internal predecessors, (19658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14934 states to 14934 states and 19658 transitions. [2023-12-22 01:53:30,163 INFO L78 Accepts]: Start accepts. Automaton has 14934 states and 19658 transitions. Word has length 119 [2023-12-22 01:53:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:53:30,163 INFO L495 AbstractCegarLoop]: Abstraction has 14934 states and 19658 transitions. [2023-12-22 01:53:30,163 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) [2023-12-22 01:53:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 14934 states and 19658 transitions. [2023-12-22 01:53:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-22 01:53:30,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:53:30,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:53:30,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-12-22 01:53:30,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:30,369 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:53:30,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:53:30,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1349101108, now seen corresponding path program 1 times [2023-12-22 01:53:30,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:53:30,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222958538] [2023-12-22 01:53:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:53:30,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:30,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:53:30,371 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:53:30,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-22 01:53:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:53:30,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:53:30,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:53:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:31,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:53:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:31,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:53:31,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222958538] [2023-12-22 01:53:31,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222958538] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:53:31,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:53:31,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:53:31,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690770075] [2023-12-22 01:53:31,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:53:31,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:53:31,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:53:31,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:53:31,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:53:31,827 INFO L87 Difference]: Start difference. First operand 14934 states and 19658 transitions. Second operand has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:33,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:53:33,402 INFO L93 Difference]: Finished difference Result 31230 states and 40862 transitions. [2023-12-22 01:53:33,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 01:53:33,403 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 0 states have call successors, (0), 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 120 [2023-12-22 01:53:33,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:53:33,423 INFO L225 Difference]: With dead ends: 31230 [2023-12-22 01:53:33,424 INFO L226 Difference]: Without dead ends: 22396 [2023-12-22 01:53:33,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-22 01:53:33,434 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 3496 mSDsluCounter, 10896 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3496 SdHoareTripleChecker+Valid, 12463 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 01:53:33,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3496 Valid, 12463 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 01:53:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22396 states. [2023-12-22 01:53:33,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22396 to 21206. [2023-12-22 01:53:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21206 states, 21204 states have (on average 1.3043765327296737) internal successors, (27658), 21205 states have internal predecessors, (27658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:33,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21206 states to 21206 states and 27658 transitions. [2023-12-22 01:53:33,880 INFO L78 Accepts]: Start accepts. Automaton has 21206 states and 27658 transitions. Word has length 120 [2023-12-22 01:53:33,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:53:33,881 INFO L495 AbstractCegarLoop]: Abstraction has 21206 states and 27658 transitions. [2023-12-22 01:53:33,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:33,881 INFO L276 IsEmpty]: Start isEmpty. Operand 21206 states and 27658 transitions. [2023-12-22 01:53:33,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 01:53:33,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:53:33,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:53:33,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-22 01:53:34,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:34,090 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:53:34,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:53:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash -316903580, now seen corresponding path program 1 times [2023-12-22 01:53:34,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:53:34,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73688789] [2023-12-22 01:53:34,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:53:34,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:34,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:53:34,092 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:53:34,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-22 01:53:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:53:34,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 01:53:34,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:53:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 01:53:34,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:53:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 01:53:34,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:53:34,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73688789] [2023-12-22 01:53:34,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73688789] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:53:34,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:53:34,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 01:53:34,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756841167] [2023-12-22 01:53:34,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:53:34,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 01:53:34,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:53:34,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 01:53:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-22 01:53:34,680 INFO L87 Difference]: Start difference. First operand 21206 states and 27658 transitions. Second operand has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:53:35,890 INFO L93 Difference]: Finished difference Result 65040 states and 83631 transitions. [2023-12-22 01:53:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 01:53:35,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 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 [2023-12-22 01:53:35,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:53:35,952 INFO L225 Difference]: With dead ends: 65040 [2023-12-22 01:53:35,952 INFO L226 Difference]: Without dead ends: 49934 [2023-12-22 01:53:35,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-22 01:53:35,965 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 4499 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4499 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:53:35,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4499 Valid, 3404 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 01:53:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49934 states. [2023-12-22 01:53:37,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49934 to 49770. [2023-12-22 01:53:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49770 states, 49768 states have (on average 1.2469860151101109) internal successors, (62060), 49769 states have internal predecessors, (62060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49770 states to 49770 states and 62060 transitions. [2023-12-22 01:53:37,856 INFO L78 Accepts]: Start accepts. Automaton has 49770 states and 62060 transitions. Word has length 122 [2023-12-22 01:53:37,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:53:37,856 INFO L495 AbstractCegarLoop]: Abstraction has 49770 states and 62060 transitions. [2023-12-22 01:53:37,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:53:37,856 INFO L276 IsEmpty]: Start isEmpty. Operand 49770 states and 62060 transitions. [2023-12-22 01:53:37,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-22 01:53:37,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:53:37,861 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:53:37,864 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 (30)] Ended with exit code 0 [2023-12-22 01:53:38,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:38,066 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:53:38,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:53:38,066 INFO L85 PathProgramCache]: Analyzing trace with hash -319376077, now seen corresponding path program 1 times [2023-12-22 01:53:38,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:53:38,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847541408] [2023-12-22 01:53:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:53:38,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:53:38,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:53:38,069 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:53:38,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-22 01:53:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:53:38,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:53:38,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:53:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:53:38,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:53:38,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:53:38,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847541408] [2023-12-22 01:53:38,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847541408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:53:38,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:53:38,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:53:38,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35419544] [2023-12-22 01:53:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:53:38,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:53:38,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:53:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:53:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:53:38,339 INFO L87 Difference]: Start difference. First operand 49770 states and 62060 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:21,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:54:21,212 INFO L93 Difference]: Finished difference Result 58033 states and 73311 transitions. [2023-12-22 01:54:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:54:21,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-12-22 01:54:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:54:21,270 INFO L225 Difference]: With dead ends: 58033 [2023-12-22 01:54:21,270 INFO L226 Difference]: Without dead ends: 52023 [2023-12-22 01:54:21,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:54:21,281 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 802 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:54:21,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 760 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 41.3s Time] [2023-12-22 01:54:21,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52023 states. [2023-12-22 01:54:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52023 to 51272. [2023-12-22 01:54:22,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51272 states, 51270 states have (on average 1.2434952213770236) internal successors, (63754), 51271 states have internal predecessors, (63754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51272 states to 51272 states and 63754 transitions. [2023-12-22 01:54:22,973 INFO L78 Accepts]: Start accepts. Automaton has 51272 states and 63754 transitions. Word has length 156 [2023-12-22 01:54:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:54:22,973 INFO L495 AbstractCegarLoop]: Abstraction has 51272 states and 63754 transitions. [2023-12-22 01:54:22,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 51272 states and 63754 transitions. [2023-12-22 01:54:22,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-22 01:54:22,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:54:22,984 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:54:22,988 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 (31)] Ended with exit code 0 [2023-12-22 01:54:23,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:54:23,188 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:54:23,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:54:23,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1034829716, now seen corresponding path program 1 times [2023-12-22 01:54:23,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:54:23,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548953304] [2023-12-22 01:54:23,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:54:23,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:54:23,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:54:23,191 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:54:23,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-22 01:54:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:54:23,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:54:23,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:54:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 61 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:25,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:54:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 61 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:26,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:54:26,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548953304] [2023-12-22 01:54:26,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548953304] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:54:26,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:54:26,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:54:26,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730178367] [2023-12-22 01:54:26,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:54:26,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:54:26,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:54:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:54:26,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:54:26,216 INFO L87 Difference]: Start difference. First operand 51272 states and 63754 transitions. Second operand has 26 states, 26 states have (on average 12.76923076923077) internal successors, (332), 26 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:54:36,234 INFO L93 Difference]: Finished difference Result 104206 states and 128709 transitions. [2023-12-22 01:54:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-22 01:54:36,234 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.76923076923077) internal successors, (332), 26 states have internal predecessors, (332), 0 states have call successors, (0), 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 181 [2023-12-22 01:54:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:54:36,324 INFO L225 Difference]: With dead ends: 104206 [2023-12-22 01:54:36,324 INFO L226 Difference]: Without dead ends: 83628 [2023-12-22 01:54:36,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1033, Invalid=5129, Unknown=0, NotChecked=0, Total=6162 [2023-12-22 01:54:36,342 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 7023 mSDsluCounter, 26145 mSDsCounter, 0 mSdLazyCounter, 3374 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7023 SdHoareTripleChecker+Valid, 27852 SdHoareTripleChecker+Invalid, 3398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:54:36,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7023 Valid, 27852 Invalid, 3398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 3374 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-22 01:54:36,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83628 states. [2023-12-22 01:54:37,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83628 to 38280. [2023-12-22 01:54:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38280 states, 38278 states have (on average 1.2446313809498928) internal successors, (47642), 38279 states have internal predecessors, (47642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:37,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38280 states to 38280 states and 47642 transitions. [2023-12-22 01:54:37,994 INFO L78 Accepts]: Start accepts. Automaton has 38280 states and 47642 transitions. Word has length 181 [2023-12-22 01:54:37,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:54:37,994 INFO L495 AbstractCegarLoop]: Abstraction has 38280 states and 47642 transitions. [2023-12-22 01:54:37,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.76923076923077) internal successors, (332), 26 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:37,994 INFO L276 IsEmpty]: Start isEmpty. Operand 38280 states and 47642 transitions. [2023-12-22 01:54:38,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-22 01:54:38,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:54:38,000 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:54:38,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-22 01:54:38,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:54:38,205 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:54:38,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:54:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1402080179, now seen corresponding path program 1 times [2023-12-22 01:54:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:54:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165892447] [2023-12-22 01:54:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:54:38,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:54:38,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:54:38,207 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:54:38,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-22 01:54:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:54:38,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:54:38,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:54:39,819 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 54 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:39,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:54:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 54 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:40,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:54:40,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165892447] [2023-12-22 01:54:40,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165892447] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:54:40,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:54:40,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:54:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15371876] [2023-12-22 01:54:40,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:54:40,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:54:40,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:54:40,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:54:40,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:54:40,501 INFO L87 Difference]: Start difference. First operand 38280 states and 47642 transitions. Second operand has 26 states, 26 states have (on average 12.923076923076923) internal successors, (336), 25 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:44,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:54:44,031 INFO L93 Difference]: Finished difference Result 66382 states and 82581 transitions. [2023-12-22 01:54:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-22 01:54:44,031 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.923076923076923) internal successors, (336), 25 states have internal predecessors, (336), 0 states have call successors, (0), 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 182 [2023-12-22 01:54:44,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:54:44,074 INFO L225 Difference]: With dead ends: 66382 [2023-12-22 01:54:44,075 INFO L226 Difference]: Without dead ends: 38282 [2023-12-22 01:54:44,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=403, Invalid=1489, Unknown=0, NotChecked=0, Total=1892 [2023-12-22 01:54:44,089 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 14994 mSDsluCounter, 8294 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14994 SdHoareTripleChecker+Valid, 9858 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-22 01:54:44,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14994 Valid, 9858 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-22 01:54:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38282 states. [2023-12-22 01:54:45,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38282 to 38280. [2023-12-22 01:54:45,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38280 states, 38278 states have (on average 1.235435498197398) internal successors, (47290), 38279 states have internal predecessors, (47290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38280 states to 38280 states and 47290 transitions. [2023-12-22 01:54:45,688 INFO L78 Accepts]: Start accepts. Automaton has 38280 states and 47290 transitions. Word has length 182 [2023-12-22 01:54:45,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:54:45,688 INFO L495 AbstractCegarLoop]: Abstraction has 38280 states and 47290 transitions. [2023-12-22 01:54:45,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.923076923076923) internal successors, (336), 25 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 38280 states and 47290 transitions. [2023-12-22 01:54:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-22 01:54:45,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:54:45,694 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:54:45,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-22 01:54:45,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:54:45,898 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:54:45,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:54:45,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1407208115, now seen corresponding path program 1 times [2023-12-22 01:54:45,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:54:45,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827778229] [2023-12-22 01:54:45,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:54:45,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:54:45,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:54:45,900 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:54:45,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-22 01:54:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:54:46,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:54:46,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:54:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 53 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:47,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:54:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 53 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:54:48,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:54:48,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827778229] [2023-12-22 01:54:48,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827778229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:54:48,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:54:48,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:54:48,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299692320] [2023-12-22 01:54:48,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:54:48,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:54:48,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:54:48,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:54:48,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:54:48,318 INFO L87 Difference]: Start difference. First operand 38280 states and 47290 transitions. Second operand has 26 states, 26 states have (on average 13.0) internal successors, (338), 26 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:54:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:54:58,166 INFO L93 Difference]: Finished difference Result 98558 states and 120127 transitions. [2023-12-22 01:54:58,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:54:58,166 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.0) internal successors, (338), 26 states have internal predecessors, (338), 0 states have call successors, (0), 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 182 [2023-12-22 01:54:58,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:54:58,261 INFO L225 Difference]: With dead ends: 98558 [2023-12-22 01:54:58,261 INFO L226 Difference]: Without dead ends: 86556 [2023-12-22 01:54:58,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=863, Invalid=3967, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:54:58,275 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 7207 mSDsluCounter, 22518 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7207 SdHoareTripleChecker+Valid, 24154 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-22 01:54:58,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7207 Valid, 24154 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-22 01:54:58,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86556 states. [2023-12-22 01:55:02,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86556 to 72838. [2023-12-22 01:55:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72838 states, 72836 states have (on average 1.2147976275468175) internal successors, (88481), 72837 states have internal predecessors, (88481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72838 states to 72838 states and 88481 transitions. [2023-12-22 01:55:02,153 INFO L78 Accepts]: Start accepts. Automaton has 72838 states and 88481 transitions. Word has length 182 [2023-12-22 01:55:02,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:55:02,153 INFO L495 AbstractCegarLoop]: Abstraction has 72838 states and 88481 transitions. [2023-12-22 01:55:02,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.0) internal successors, (338), 26 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 72838 states and 88481 transitions. [2023-12-22 01:55:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 01:55:02,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:55:02,164 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:55:02,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-22 01:55:02,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:55:02,368 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:55:02,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:55:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1478212348, now seen corresponding path program 1 times [2023-12-22 01:55:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:55:02,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612858237] [2023-12-22 01:55:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:55:02,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:55:02,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:55:02,370 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:55:02,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-22 01:55:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:55:02,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:55:02,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:55:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 46 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:55:04,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:55:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 46 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:55:04,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:55:04,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612858237] [2023-12-22 01:55:04,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612858237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:55:04,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:55:04,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:55:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822919772] [2023-12-22 01:55:04,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:55:04,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:55:04,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:55:04,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:55:04,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:55:04,553 INFO L87 Difference]: Start difference. First operand 72838 states and 88481 transitions. Second operand has 26 states, 26 states have (on average 13.153846153846153) internal successors, (342), 25 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:55:19,423 INFO L93 Difference]: Finished difference Result 302740 states and 371885 transitions. [2023-12-22 01:55:19,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-22 01:55:19,424 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.153846153846153) internal successors, (342), 25 states have internal predecessors, (342), 0 states have call successors, (0), 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 183 [2023-12-22 01:55:19,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:55:19,920 INFO L225 Difference]: With dead ends: 302740 [2023-12-22 01:55:19,920 INFO L226 Difference]: Without dead ends: 272956 [2023-12-22 01:55:19,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2687 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1484, Invalid=7636, Unknown=0, NotChecked=0, Total=9120 [2023-12-22 01:55:19,961 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 19939 mSDsluCounter, 8436 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19939 SdHoareTripleChecker+Valid, 10000 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-22 01:55:19,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19939 Valid, 10000 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-22 01:55:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272956 states. [2023-12-22 01:55:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272956 to 72838. [2023-12-22 01:55:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72838 states, 72836 states have (on average 1.2113927178867594) internal successors, (88233), 72837 states have internal predecessors, (88233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72838 states to 72838 states and 88233 transitions. [2023-12-22 01:55:26,141 INFO L78 Accepts]: Start accepts. Automaton has 72838 states and 88233 transitions. Word has length 183 [2023-12-22 01:55:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:55:26,141 INFO L495 AbstractCegarLoop]: Abstraction has 72838 states and 88233 transitions. [2023-12-22 01:55:26,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.153846153846153) internal successors, (342), 25 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:26,141 INFO L276 IsEmpty]: Start isEmpty. Operand 72838 states and 88233 transitions. [2023-12-22 01:55:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 01:55:26,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:55:26,152 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:55:26,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-22 01:55:26,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:55:26,356 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:55:26,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:55:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1849233668, now seen corresponding path program 1 times [2023-12-22 01:55:26,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:55:26,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762405822] [2023-12-22 01:55:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:55:26,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:55:26,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:55:26,360 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:55:26,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-22 01:55:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:55:26,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:55:26,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:55:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 45 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:55:28,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:55:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 45 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:55:29,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:55:29,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762405822] [2023-12-22 01:55:29,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762405822] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:55:29,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:55:29,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:55:29,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246163537] [2023-12-22 01:55:29,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:55:29,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:55:29,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:55:29,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:55:29,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:55:29,307 INFO L87 Difference]: Start difference. First operand 72838 states and 88233 transitions. Second operand has 26 states, 26 states have (on average 13.23076923076923) internal successors, (344), 26 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:39,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:55:39,778 INFO L93 Difference]: Finished difference Result 127390 states and 154671 transitions. [2023-12-22 01:55:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-22 01:55:39,779 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.23076923076923) internal successors, (344), 26 states have internal predecessors, (344), 0 states have call successors, (0), 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 183 [2023-12-22 01:55:39,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:55:39,936 INFO L225 Difference]: With dead ends: 127390 [2023-12-22 01:55:39,936 INFO L226 Difference]: Without dead ends: 113724 [2023-12-22 01:55:39,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=321, Invalid=2031, Unknown=0, NotChecked=0, Total=2352 [2023-12-22 01:55:39,970 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 2078 mSDsluCounter, 22539 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 24154 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-22 01:55:39,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 24154 Invalid, 2361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-22 01:55:40,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113724 states. [2023-12-22 01:55:44,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113724 to 70074. [2023-12-22 01:55:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70074 states, 70072 states have (on average 1.2141939719146022) internal successors, (85081), 70073 states have internal predecessors, (85081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:44,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70074 states to 70074 states and 85081 transitions. [2023-12-22 01:55:44,862 INFO L78 Accepts]: Start accepts. Automaton has 70074 states and 85081 transitions. Word has length 183 [2023-12-22 01:55:44,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:55:44,863 INFO L495 AbstractCegarLoop]: Abstraction has 70074 states and 85081 transitions. [2023-12-22 01:55:44,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.23076923076923) internal successors, (344), 26 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:44,863 INFO L276 IsEmpty]: Start isEmpty. Operand 70074 states and 85081 transitions. [2023-12-22 01:55:44,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-22 01:55:44,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:55:44,870 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:55:44,874 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 (36)] Ended with exit code 0 [2023-12-22 01:55:45,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:55:45,074 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:55:45,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:55:45,074 INFO L85 PathProgramCache]: Analyzing trace with hash 302903651, now seen corresponding path program 1 times [2023-12-22 01:55:45,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:55:45,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331781787] [2023-12-22 01:55:45,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:55:45,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:55:45,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:55:45,076 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:55:45,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-22 01:55:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:55:45,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:55:45,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:55:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 38 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:55:46,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:55:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 38 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:55:47,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:55:47,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331781787] [2023-12-22 01:55:47,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331781787] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:55:47,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:55:47,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:55:47,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499143613] [2023-12-22 01:55:47,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:55:47,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:55:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:55:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:55:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:55:47,350 INFO L87 Difference]: Start difference. First operand 70074 states and 85081 transitions. Second operand has 26 states, 26 states have (on average 13.384615384615385) internal successors, (348), 25 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:53,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:55:53,294 INFO L93 Difference]: Finished difference Result 106252 states and 129480 transitions. [2023-12-22 01:55:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:55:53,295 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.384615384615385) internal successors, (348), 25 states have internal predecessors, (348), 0 states have call successors, (0), 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 184 [2023-12-22 01:55:53,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:55:53,383 INFO L225 Difference]: With dead ends: 106252 [2023-12-22 01:55:53,383 INFO L226 Difference]: Without dead ends: 77470 [2023-12-22 01:55:53,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:55:53,399 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 18643 mSDsluCounter, 6613 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18643 SdHoareTripleChecker+Valid, 8177 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:55:53,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18643 Valid, 8177 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 01:55:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77470 states. [2023-12-22 01:55:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77470 to 70074. [2023-12-22 01:55:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70074 states, 70072 states have (on average 1.2106547551090308) internal successors, (84833), 70073 states have internal predecessors, (84833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:58,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70074 states to 70074 states and 84833 transitions. [2023-12-22 01:55:58,157 INFO L78 Accepts]: Start accepts. Automaton has 70074 states and 84833 transitions. Word has length 184 [2023-12-22 01:55:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:55:58,157 INFO L495 AbstractCegarLoop]: Abstraction has 70074 states and 84833 transitions. [2023-12-22 01:55:58,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.384615384615385) internal successors, (348), 25 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:55:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 70074 states and 84833 transitions. [2023-12-22 01:55:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-22 01:55:58,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:55:58,164 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:55:58,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-22 01:55:58,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:55:58,371 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:55:58,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:55:58,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1716008349, now seen corresponding path program 1 times [2023-12-22 01:55:58,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:55:58,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411184112] [2023-12-22 01:55:58,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:55:58,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:55:58,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:55:58,373 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:55:58,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-22 01:55:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:55:58,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:55:58,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:56:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:56:01,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:56:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:56:01,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:56:01,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411184112] [2023-12-22 01:56:01,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411184112] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:56:01,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:56:01,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:56:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122882941] [2023-12-22 01:56:01,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:56:01,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:56:01,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:56:01,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:56:01,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:56:01,848 INFO L87 Difference]: Start difference. First operand 70074 states and 84833 transitions. Second operand has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:56:19,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:56:19,831 INFO L93 Difference]: Finished difference Result 170434 states and 205627 transitions. [2023-12-22 01:56:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:56:19,832 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2023-12-22 01:56:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:56:20,032 INFO L225 Difference]: With dead ends: 170434 [2023-12-22 01:56:20,033 INFO L226 Difference]: Without dead ends: 157056 [2023-12-22 01:56:20,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:56:20,054 INFO L413 NwaCegarLoop]: 1711 mSDtfsCounter, 2632 mSDsluCounter, 23165 mSDsCounter, 0 mSdLazyCounter, 3111 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2632 SdHoareTripleChecker+Valid, 24876 SdHoareTripleChecker+Invalid, 3130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-22 01:56:20,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2632 Valid, 24876 Invalid, 3130 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 3111 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-22 01:56:20,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157056 states. [2023-12-22 01:56:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157056 to 82700. [2023-12-22 01:56:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82700 states, 82698 states have (on average 1.2083847251445017) internal successors, (99931), 82699 states have internal predecessors, (99931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:56:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82700 states to 82700 states and 99931 transitions. [2023-12-22 01:56:27,444 INFO L78 Accepts]: Start accepts. Automaton has 82700 states and 99931 transitions. Word has length 184 [2023-12-22 01:56:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:56:27,444 INFO L495 AbstractCegarLoop]: Abstraction has 82700 states and 99931 transitions. [2023-12-22 01:56:27,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:56:27,445 INFO L276 IsEmpty]: Start isEmpty. Operand 82700 states and 99931 transitions. [2023-12-22 01:56:27,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-22 01:56:27,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:56:27,452 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:56:27,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-22 01:56:27,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:56:27,655 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:56:27,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:56:27,656 INFO L85 PathProgramCache]: Analyzing trace with hash 396022900, now seen corresponding path program 1 times [2023-12-22 01:56:27,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:56:27,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556202782] [2023-12-22 01:56:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:56:27,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:56:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:56:27,657 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:56:27,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-22 01:56:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:56:27,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:56:27,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:56:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 30 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:56:29,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:56:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 30 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:56:29,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:56:29,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556202782] [2023-12-22 01:56:29,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556202782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:56:29,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:56:29,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:56:29,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306344140] [2023-12-22 01:56:29,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:56:29,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:56:29,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:56:29,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:56:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:56:29,754 INFO L87 Difference]: Start difference. First operand 82700 states and 99931 transitions. Second operand has 26 states, 26 states have (on average 13.615384615384615) internal successors, (354), 25 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:56:38,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:56:38,885 INFO L93 Difference]: Finished difference Result 123008 states and 149097 transitions. [2023-12-22 01:56:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:56:38,886 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.615384615384615) internal successors, (354), 25 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2023-12-22 01:56:38,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:56:38,984 INFO L225 Difference]: With dead ends: 123008 [2023-12-22 01:56:38,984 INFO L226 Difference]: Without dead ends: 88896 [2023-12-22 01:56:38,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:56:39,000 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 15506 mSDsluCounter, 8187 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15506 SdHoareTripleChecker+Valid, 9751 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:56:39,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15506 Valid, 9751 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 01:56:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88896 states. [2023-12-22 01:56:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88896 to 82700. [2023-12-22 01:56:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82700 states, 82698 states have (on average 1.2046361459769281) internal successors, (99621), 82699 states have internal predecessors, (99621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:56:45,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82700 states to 82700 states and 99621 transitions. [2023-12-22 01:56:45,817 INFO L78 Accepts]: Start accepts. Automaton has 82700 states and 99621 transitions. Word has length 185 [2023-12-22 01:56:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:56:45,817 INFO L495 AbstractCegarLoop]: Abstraction has 82700 states and 99621 transitions. [2023-12-22 01:56:45,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.615384615384615) internal successors, (354), 25 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:56:45,818 INFO L276 IsEmpty]: Start isEmpty. Operand 82700 states and 99621 transitions. [2023-12-22 01:56:45,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-22 01:56:45,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:56:45,827 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:56:45,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-12-22 01:56:46,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:56:46,031 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:56:46,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:56:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1193818740, now seen corresponding path program 1 times [2023-12-22 01:56:46,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:56:46,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153938572] [2023-12-22 01:56:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:56:46,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:56:46,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:56:46,033 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:56:46,048 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 (40)] Waiting until timeout for monitored process [2023-12-22 01:56:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:56:46,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:56:46,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:56:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 29 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:56:48,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:56:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 29 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:56:48,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:56:48,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153938572] [2023-12-22 01:56:48,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153938572] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:56:48,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:56:48,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:56:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734534416] [2023-12-22 01:56:48,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:56:48,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:56:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:56:48,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:56:48,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:56:48,738 INFO L87 Difference]: Start difference. First operand 82700 states and 99621 transitions. Second operand has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:57:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:57:10,919 INFO L93 Difference]: Finished difference Result 210120 states and 251958 transitions. [2023-12-22 01:57:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:57:10,920 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2023-12-22 01:57:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:57:11,167 INFO L225 Difference]: With dead ends: 210120 [2023-12-22 01:57:11,167 INFO L226 Difference]: Without dead ends: 193782 [2023-12-22 01:57:11,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:57:11,209 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 2337 mSDsluCounter, 24734 mSDsCounter, 0 mSdLazyCounter, 3244 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 26433 SdHoareTripleChecker+Invalid, 3262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:57:11,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 26433 Invalid, 3262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 3244 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-22 01:57:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193782 states. [2023-12-22 01:57:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193782 to 100090. [2023-12-22 01:57:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100090 states, 100088 states have (on average 1.2022220446007514) internal successors, (120328), 100089 states have internal predecessors, (120328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:57:22,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100090 states to 100090 states and 120328 transitions. [2023-12-22 01:57:22,316 INFO L78 Accepts]: Start accepts. Automaton has 100090 states and 120328 transitions. Word has length 185 [2023-12-22 01:57:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:57:22,317 INFO L495 AbstractCegarLoop]: Abstraction has 100090 states and 120328 transitions. [2023-12-22 01:57:22,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:57:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 100090 states and 120328 transitions. [2023-12-22 01:57:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-22 01:57:22,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:57:22,326 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:57:22,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-22 01:57:22,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:57:22,532 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:57:22,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:57:22,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1172021011, now seen corresponding path program 1 times [2023-12-22 01:57:22,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:57:22,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664924901] [2023-12-22 01:57:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:57:22,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:57:22,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:57:22,534 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:57:22,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-22 01:57:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:57:22,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:57:22,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:57:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 22 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:57:24,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:57:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 22 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:57:24,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:57:24,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664924901] [2023-12-22 01:57:24,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664924901] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:57:24,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:57:24,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:57:24,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394393347] [2023-12-22 01:57:24,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:57:24,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:57:24,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:57:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:57:24,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:57:24,985 INFO L87 Difference]: Start difference. First operand 100090 states and 120328 transitions. Second operand has 26 states, 26 states have (on average 13.846153846153847) internal successors, (360), 25 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:57:36,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:57:36,462 INFO L93 Difference]: Finished difference Result 145043 states and 174852 transitions. [2023-12-22 01:57:36,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:57:36,463 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.846153846153847) internal successors, (360), 25 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2023-12-22 01:57:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:57:36,614 INFO L225 Difference]: With dead ends: 145043 [2023-12-22 01:57:36,614 INFO L226 Difference]: Without dead ends: 104334 [2023-12-22 01:57:36,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:57:36,650 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 19602 mSDsluCounter, 8186 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19602 SdHoareTripleChecker+Valid, 9750 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:57:36,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19602 Valid, 9750 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 01:57:36,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104334 states. [2023-12-22 01:57:47,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104334 to 100090. [2023-12-22 01:57:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100090 states, 100088 states have (on average 1.1981955878826633) internal successors, (119925), 100089 states have internal predecessors, (119925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:57:47,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100090 states to 100090 states and 119925 transitions. [2023-12-22 01:57:47,211 INFO L78 Accepts]: Start accepts. Automaton has 100090 states and 119925 transitions. Word has length 186 [2023-12-22 01:57:47,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:57:47,211 INFO L495 AbstractCegarLoop]: Abstraction has 100090 states and 119925 transitions. [2023-12-22 01:57:47,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.846153846153847) internal successors, (360), 25 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:57:47,211 INFO L276 IsEmpty]: Start isEmpty. Operand 100090 states and 119925 transitions. [2023-12-22 01:57:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-22 01:57:47,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:57:47,219 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:57:47,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-22 01:57:47,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:57:47,422 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:57:47,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:57:47,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1894051309, now seen corresponding path program 1 times [2023-12-22 01:57:47,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:57:47,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498976914] [2023-12-22 01:57:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:57:47,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:57:47,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:57:47,424 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:57:47,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-22 01:57:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:57:47,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:57:47,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:57:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:57:49,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:57:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:57:50,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:57:50,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498976914] [2023-12-22 01:57:50,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498976914] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:57:50,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:57:50,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:57:50,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126904717] [2023-12-22 01:57:50,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:57:50,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:57:50,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:57:50,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:57:50,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:57:50,378 INFO L87 Difference]: Start difference. First operand 100090 states and 119925 transitions. Second operand has 26 states, 26 states have (on average 13.923076923076923) internal successors, (362), 26 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:58:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:58:19,623 INFO L93 Difference]: Finished difference Result 246869 states and 294346 transitions. [2023-12-22 01:58:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:58:19,623 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.923076923076923) internal successors, (362), 26 states have internal predecessors, (362), 0 states have call successors, (0), 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 186 [2023-12-22 01:58:19,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:58:19,944 INFO L225 Difference]: With dead ends: 246869 [2023-12-22 01:58:19,945 INFO L226 Difference]: Without dead ends: 226667 [2023-12-22 01:58:19,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:58:19,995 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 2184 mSDsluCounter, 26052 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 27738 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-22 01:58:19,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2184 Valid, 27738 Invalid, 3080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3065 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-22 01:58:20,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226667 states. [2023-12-22 01:58:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226667 to 119588. [2023-12-22 01:58:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119588 states, 119586 states have (on average 1.1956416302911712) internal successors, (142982), 119587 states have internal predecessors, (142982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:58:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119588 states to 119588 states and 142982 transitions. [2023-12-22 01:58:35,184 INFO L78 Accepts]: Start accepts. Automaton has 119588 states and 142982 transitions. Word has length 186 [2023-12-22 01:58:35,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:58:35,184 INFO L495 AbstractCegarLoop]: Abstraction has 119588 states and 142982 transitions. [2023-12-22 01:58:35,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.923076923076923) internal successors, (362), 26 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:58:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 119588 states and 142982 transitions. [2023-12-22 01:58:35,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-22 01:58:35,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:58:35,207 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:58:35,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-22 01:58:35,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:58:35,411 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:58:35,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:58:35,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1828305892, now seen corresponding path program 1 times [2023-12-22 01:58:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:58:35,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525213282] [2023-12-22 01:58:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:58:35,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:58:35,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:58:35,413 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:58:35,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-22 01:58:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:58:35,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:58:35,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:58:37,990 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 13 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:58:37,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:58:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 13 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:58:38,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:58:38,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525213282] [2023-12-22 01:58:38,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525213282] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:58:38,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:58:38,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:58:38,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784113360] [2023-12-22 01:58:38,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:58:38,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:58:38,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:58:38,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:58:38,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:58:38,859 INFO L87 Difference]: Start difference. First operand 119588 states and 142982 transitions. Second operand has 26 states, 26 states have (on average 14.153846153846153) internal successors, (368), 26 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:59:15,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:59:15,469 INFO L93 Difference]: Finished difference Result 316436 states and 375556 transitions. [2023-12-22 01:59:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-22 01:59:15,469 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.153846153846153) internal successors, (368), 26 states have internal predecessors, (368), 0 states have call successors, (0), 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 187 [2023-12-22 01:59:15,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:59:15,759 INFO L225 Difference]: With dead ends: 316436 [2023-12-22 01:59:15,759 INFO L226 Difference]: Without dead ends: 255482 [2023-12-22 01:59:15,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-22 01:59:15,790 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 3664 mSDsluCounter, 25678 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3664 SdHoareTripleChecker+Valid, 27351 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:59:15,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3664 Valid, 27351 Invalid, 2735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-22 01:59:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255482 states. [2023-12-22 01:59:43,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255482 to 229449. [2023-12-22 01:59:43,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229449 states, 229447 states have (on average 1.1805558582156228) internal successors, (270875), 229448 states have internal predecessors, (270875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:59:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229449 states to 229449 states and 270875 transitions. [2023-12-22 01:59:44,346 INFO L78 Accepts]: Start accepts. Automaton has 229449 states and 270875 transitions. Word has length 187 [2023-12-22 01:59:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:59:44,346 INFO L495 AbstractCegarLoop]: Abstraction has 229449 states and 270875 transitions. [2023-12-22 01:59:44,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.153846153846153) internal successors, (368), 26 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:59:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand 229449 states and 270875 transitions. [2023-12-22 01:59:44,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-22 01:59:44,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:59:44,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:59:44,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-12-22 01:59:44,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:59:44,582 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:59:44,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:59:44,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1610139760, now seen corresponding path program 1 times [2023-12-22 01:59:44,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:59:44,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712941628] [2023-12-22 01:59:44,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:59:44,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:59:44,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:59:44,585 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 01:59:44,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-22 01:59:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:59:44,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:59:44,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:59:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 122 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:59:45,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:59:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 122 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:59:46,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:59:46,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712941628] [2023-12-22 01:59:46,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712941628] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:59:46,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:59:46,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 01:59:46,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790955583] [2023-12-22 01:59:46,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:59:46,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 01:59:46,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:59:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 01:59:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 01:59:46,306 INFO L87 Difference]: Start difference. First operand 229449 states and 270875 transitions. Second operand has 7 states, 7 states have (on average 47.57142857142857) internal successors, (333), 6 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:01:58,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:01:58,143 INFO L93 Difference]: Finished difference Result 247582 states and 295466 transitions. [2023-12-22 02:01:58,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 02:01:58,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 47.57142857142857) internal successors, (333), 6 states have internal predecessors, (333), 0 states have call successors, (0), 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 227 [2023-12-22 02:01:58,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:01:58,430 INFO L225 Difference]: With dead ends: 247582 [2023-12-22 02:01:58,431 INFO L226 Difference]: Without dead ends: 238497 [2023-12-22 02:01:58,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-22 02:01:58,460 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 5862 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 10187 mSolverCounterSat, 2736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5862 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 12923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2736 IncrementalHoareTripleChecker+Valid, 10187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:01:58,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5862 Valid, 451 Invalid, 12923 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2736 Valid, 10187 Invalid, 0 Unknown, 0 Unchecked, 104.3s Time] [2023-12-22 02:01:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238497 states. [2023-12-22 02:02:27,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238497 to 236959. [2023-12-22 02:02:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236959 states, 236957 states have (on average 1.1796106466574103) internal successors, (279517), 236958 states have internal predecessors, (279517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236959 states to 236959 states and 279517 transitions. [2023-12-22 02:02:28,734 INFO L78 Accepts]: Start accepts. Automaton has 236959 states and 279517 transitions. Word has length 227 [2023-12-22 02:02:28,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:02:28,734 INFO L495 AbstractCegarLoop]: Abstraction has 236959 states and 279517 transitions. [2023-12-22 02:02:28,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 47.57142857142857) internal successors, (333), 6 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:02:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 236959 states and 279517 transitions. [2023-12-22 02:02:28,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-22 02:02:28,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:02:28,815 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:02:28,822 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 (44)] Forceful destruction successful, exit code 0 [2023-12-22 02:02:29,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:02:29,020 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:02:29,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:02:29,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1745517355, now seen corresponding path program 1 times [2023-12-22 02:02:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:02:29,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355250401] [2023-12-22 02:02:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:02:29,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:02:29,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:02:29,031 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:02:29,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-22 02:02:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:02:29,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 02:02:29,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:02:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 100 proven. 277 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:32,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:02:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 100 proven. 277 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:02:34,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:02:34,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355250401] [2023-12-22 02:02:34,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355250401] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:02:34,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:02:34,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-22 02:02:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812838196] [2023-12-22 02:02:34,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:02:34,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-22 02:02:34,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:02:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-22 02:02:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-22 02:02:34,095 INFO L87 Difference]: Start difference. First operand 236959 states and 279517 transitions. Second operand has 36 states, 36 states have (on average 13.222222222222221) internal successors, (476), 36 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:33,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:03:33,757 INFO L93 Difference]: Finished difference Result 364733 states and 430619 transitions. [2023-12-22 02:03:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-12-22 02:03:33,758 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 13.222222222222221) internal successors, (476), 36 states have internal predecessors, (476), 0 states have call successors, (0), 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 253 [2023-12-22 02:03:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:03:34,459 INFO L225 Difference]: With dead ends: 364733 [2023-12-22 02:03:34,459 INFO L226 Difference]: Without dead ends: 323207 [2023-12-22 02:03:34,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5828 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=2747, Invalid=18133, Unknown=0, NotChecked=0, Total=20880 [2023-12-22 02:03:34,553 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 5592 mSDsluCounter, 33032 mSDsCounter, 0 mSdLazyCounter, 7742 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5592 SdHoareTripleChecker+Valid, 34778 SdHoareTripleChecker+Invalid, 7779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 7742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:03:34,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5592 Valid, 34778 Invalid, 7779 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 7742 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-12-22 02:03:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323207 states. [2023-12-22 02:03:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323207 to 136865. [2023-12-22 02:03:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136865 states, 136863 states have (on average 1.1881297355749911) internal successors, (162611), 136864 states have internal predecessors, (162611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136865 states to 136865 states and 162611 transitions. [2023-12-22 02:03:54,090 INFO L78 Accepts]: Start accepts. Automaton has 136865 states and 162611 transitions. Word has length 253 [2023-12-22 02:03:54,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:03:54,090 INFO L495 AbstractCegarLoop]: Abstraction has 136865 states and 162611 transitions. [2023-12-22 02:03:54,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 13.222222222222221) internal successors, (476), 36 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:03:54,090 INFO L276 IsEmpty]: Start isEmpty. Operand 136865 states and 162611 transitions. [2023-12-22 02:03:54,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-22 02:03:54,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:03:54,131 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:03:54,138 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 (45)] Forceful destruction successful, exit code 0 [2023-12-22 02:03:54,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:03:54,335 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:03:54,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:03:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1824420309, now seen corresponding path program 2 times [2023-12-22 02:03:54,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:03:54,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836815250] [2023-12-22 02:03:54,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 02:03:54,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:03:54,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:03:54,337 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:03:54,354 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 (46)] Waiting until timeout for monitored process [2023-12-22 02:03:54,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 02:03:54,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 02:03:54,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:03:54,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-22 02:03:57,509 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-22 02:03:57,512 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 02:03:57,512 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 02:03:57,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2023-12-22 02:03:57,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:03:57,715 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 254 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ATOM-1 context. [2023-12-22 02:03:57,717 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-22 02:03:57,721 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:03:57,725 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 02:03:57,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 02:03:57 BoogieIcfgContainer [2023-12-22 02:03:57,731 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 02:03:57,731 INFO L158 Benchmark]: Toolchain (without parser) took 846200.08ms. Allocated memory was 195.0MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 128.5MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-22 02:03:57,731 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 195.0MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 02:03:57,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1539.59ms. Allocated memory was 195.0MB in the beginning and 342.9MB in the end (delta: 147.8MB). Free memory was 128.0MB in the beginning and 148.6MB in the end (delta: -20.5MB). Peak memory consumption was 128.7MB. Max. memory is 8.0GB. [2023-12-22 02:03:57,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 165.80ms. Allocated memory is still 342.9MB. Free memory was 148.6MB in the beginning and 112.5MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-22 02:03:57,732 INFO L158 Benchmark]: Boogie Preprocessor took 255.86ms. Allocated memory is still 342.9MB. Free memory was 112.5MB in the beginning and 244.1MB in the end (delta: -131.6MB). Peak memory consumption was 25.7MB. Max. memory is 8.0GB. [2023-12-22 02:03:57,732 INFO L158 Benchmark]: RCFGBuilder took 27437.39ms. Allocated memory was 342.9MB in the beginning and 615.5MB in the end (delta: 272.6MB). Free memory was 244.1MB in the beginning and 454.9MB in the end (delta: -210.8MB). Peak memory consumption was 189.8MB. Max. memory is 8.0GB. [2023-12-22 02:03:57,732 INFO L158 Benchmark]: TraceAbstraction took 816795.14ms. Allocated memory was 615.5MB in the beginning and 6.5GB in the end (delta: 5.9GB). Free memory was 454.3MB in the beginning and 4.5GB in the end (delta: -4.1GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-22 02:03:57,740 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 195.0MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1539.59ms. Allocated memory was 195.0MB in the beginning and 342.9MB in the end (delta: 147.8MB). Free memory was 128.0MB in the beginning and 148.6MB in the end (delta: -20.5MB). Peak memory consumption was 128.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 165.80ms. Allocated memory is still 342.9MB. Free memory was 148.6MB in the beginning and 112.5MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 255.86ms. Allocated memory is still 342.9MB. Free memory was 112.5MB in the beginning and 244.1MB in the end (delta: -131.6MB). Peak memory consumption was 25.7MB. Max. memory is 8.0GB. * RCFGBuilder took 27437.39ms. Allocated memory was 342.9MB in the beginning and 615.5MB in the end (delta: 272.6MB). Free memory was 244.1MB in the beginning and 454.9MB in the end (delta: -210.8MB). Peak memory consumption was 189.8MB. Max. memory is 8.0GB. * TraceAbstraction took 816795.14ms. Allocated memory was 615.5MB in the beginning and 6.5GB in the end (delta: 5.9GB). Free memory was 454.3MB in the beginning and 4.5GB in the end (delta: -4.1GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 597]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 597). Cancelled while NwaCegarLoop was analyzing trace of length 254 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 756]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 756). Cancelled while NwaCegarLoop was analyzing trace of length 254 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 867 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 816.7s, OverallIterations: 45, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.3s, AutomataDifference: 584.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187530 SdHoareTripleChecker+Valid, 338.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 187530 mSDsluCounter, 408339 SdHoareTripleChecker+Invalid, 284.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 341429 mSDsCounter, 7392 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62670 IncrementalHoareTripleChecker+Invalid, 70062 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7392 mSolverCounterUnsat, 66910 mSDtfsCounter, 62670 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9779 GetRequests, 8678 SyntacticMatches, 0 SemanticMatches, 1101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17648 ImplicationChecksByTransitivity, 54.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236959occurred in iteration=43, InterpolantAutomatonStates: 812, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 163.4s AutomataMinimizationTime, 44 MinimizatonAttempts, 841503 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 50.9s InterpolantComputationTime, 5502 NumberOfCodeBlocks, 5502 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 9140 ConstructedInterpolants, 2615 QuantifiedInterpolants, 102584 SizeOfPredicates, 186 NumberOfNonLiveVariables, 12786 ConjunctsInSsa, 315 ConjunctsInUnsatCore, 67 InterpolantComputations, 21 PerfectInterpolantSequences, 1738/4994 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown