/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.3.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 23:55:45,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 23:55:46,031 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 23:55:46,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 23:55:46,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 23:55:46,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 23:55:46,075 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 23:55:46,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 23:55:46,076 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 23:55:46,076 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 23:55:46,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 23:55:46,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 23:55:46,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 23:55:46,077 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 23:55:46,078 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 23:55:46,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 23:55:46,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 23:55:46,079 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 23:55:46,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 23:55:46,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 23:55:46,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 23:55:46,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 23:55:46,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 23:55:46,084 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 23:55:46,089 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 23:55:46,089 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 23:55:46,089 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 23:55:46,089 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 23:55:46,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 23:55:46,090 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 23:55:46,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 23:55:46,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 23:55:46,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 23:55:46,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 23:55:46,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:55:46,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 23:55:46,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 23:55:46,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 23:55:46,092 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 23:55:46,092 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 23:55:46,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 23:55:46,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 23:55:46,093 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 23:55:46,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 23:55:46,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 23:55:46,094 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 23:55:46,094 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 23:55:46,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 23:55:46,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 23:55:46,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 23:55:46,300 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 23:55:46,300 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 23:55:46,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-21 23:55:47,513 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 23:55:47,918 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 23:55:47,918 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-21 23:55:47,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c546b4e1/5e820aac47d34332abb02a9b7618675a/FLAGfbece124a [2023-12-21 23:55:47,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c546b4e1/5e820aac47d34332abb02a9b7618675a [2023-12-21 23:55:47,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 23:55:47,965 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 23:55:47,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 23:55:47,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 23:55:47,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 23:55:47,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:55:47" (1/1) ... [2023-12-21 23:55:47,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bfab381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:47, skipping insertion in model container [2023-12-21 23:55:47,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:55:47" (1/1) ... [2023-12-21 23:55:48,096 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 23:55:48,434 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.3.ufo.UNBOUNDED.pals+Problem12_label05.c[6450,6463] [2023-12-21 23:55:48,502 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.3.ufo.UNBOUNDED.pals+Problem12_label05.c[13386,13399] [2023-12-21 23:55:49,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:55:49,222 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 23:55:49,272 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.3.ufo.UNBOUNDED.pals+Problem12_label05.c[6450,6463] [2023-12-21 23:55:49,286 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.3.ufo.UNBOUNDED.pals+Problem12_label05.c[13386,13399] [2023-12-21 23:55:49,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:55:49,696 INFO L206 MainTranslator]: Completed translation [2023-12-21 23:55:49,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49 WrapperNode [2023-12-21 23:55:49,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 23:55:49,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 23:55:49,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 23:55:49,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 23:55:49,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:49,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:49,893 INFO L138 Inliner]: procedures = 36, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4962 [2023-12-21 23:55:49,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 23:55:49,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 23:55:49,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 23:55:49,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 23:55:49,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:49,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:49,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:50,065 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 23:55:50,065 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:50,065 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:50,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:50,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:50,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:50,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:50,331 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 23:55:50,332 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 23:55:50,333 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 23:55:50,333 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 23:55:50,333 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (1/1) ... [2023-12-21 23:55:50,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:55:50,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 23:55:50,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 23:55:50,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 23:55:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 23:55:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 23:55:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 23:55:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 23:55:50,493 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 23:55:50,494 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 23:56:13,534 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 23:56:13,586 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 23:56:13,588 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 23:56:13,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:56:13 BoogieIcfgContainer [2023-12-21 23:56:13,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 23:56:13,594 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 23:56:13,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 23:56:13,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 23:56:13,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:55:47" (1/3) ... [2023-12-21 23:56:13,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cf7241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:56:13, skipping insertion in model container [2023-12-21 23:56:13,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:49" (2/3) ... [2023-12-21 23:56:13,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cf7241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:56:13, skipping insertion in model container [2023-12-21 23:56:13,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:56:13" (3/3) ... [2023-12-21 23:56:13,598 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-21 23:56:13,612 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 23:56:13,612 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 23:56:13,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 23:56:13,685 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;@4fc10ad3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 23:56:13,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 23:56:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 23:56:13,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:13,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:13,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:13,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2106044916, now seen corresponding path program 1 times [2023-12-21 23:56:13,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:13,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737973284] [2023-12-21 23:56:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:13,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:13,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:13,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:13,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 23:56:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:13,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 23:56:13,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:13,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:13,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:13,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:13,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737973284] [2023-12-21 23:56:13,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737973284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:13,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:13,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:56:13,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020294487] [2023-12-21 23:56:13,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:13,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 23:56:13,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:13,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 23:56:13,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 23:56:13,947 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:14,067 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2023-12-21 23:56:14,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 23:56:14,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-21 23:56:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:14,086 INFO L225 Difference]: With dead ends: 1597 [2023-12-21 23:56:14,087 INFO L226 Difference]: Without dead ends: 805 [2023-12-21 23:56:14,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 23:56:14,095 INFO L413 NwaCegarLoop]: 1523 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, 1523 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 [2023-12-21 23:56:14,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:56:14,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-21 23:56:14,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-21 23:56:14,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2023-12-21 23:56:14,168 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 17 [2023-12-21 23:56:14,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:14,169 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2023-12-21 23:56:14,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2023-12-21 23:56:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 23:56:14,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:14,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:14,176 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 [2023-12-21 23:56:14,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:14,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:14,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:14,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1602116366, now seen corresponding path program 1 times [2023-12-21 23:56:14,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:14,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326228314] [2023-12-21 23:56:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:14,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:14,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:14,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:14,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 23:56:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:14,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 23:56:14,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:14,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:14,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:14,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326228314] [2023-12-21 23:56:14,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326228314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:14,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:14,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 23:56:14,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663184059] [2023-12-21 23:56:14,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:14,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 23:56:14,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:14,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 23:56:14,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:56:14,494 INFO L87 Difference]: Start difference. First operand 805 states and 1524 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:14,573 INFO L93 Difference]: Finished difference Result 839 states and 1576 transitions. [2023-12-21 23:56:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 23:56:14,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-21 23:56:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:14,578 INFO L225 Difference]: With dead ends: 839 [2023-12-21 23:56:14,578 INFO L226 Difference]: Without dead ends: 805 [2023-12-21 23:56:14,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:56:14,580 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:56:14,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:56:14,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-21 23:56:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-21 23:56:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8779576587795765) internal successors, (1508), 804 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:14,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1508 transitions. [2023-12-21 23:56:14,606 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1508 transitions. Word has length 17 [2023-12-21 23:56:14,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:14,606 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1508 transitions. [2023-12-21 23:56:14,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:14,607 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1508 transitions. [2023-12-21 23:56:14,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 23:56:14,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:14,609 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] [2023-12-21 23:56:14,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 23:56:14,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:14,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:14,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1530210848, now seen corresponding path program 1 times [2023-12-21 23:56:14,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:14,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833969020] [2023-12-21 23:56:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:14,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:14,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:14,815 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:14,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 23:56:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:14,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:56:14,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:15,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:15,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:15,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833969020] [2023-12-21 23:56:15,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833969020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:15,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:15,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:56:15,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976886333] [2023-12-21 23:56:15,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:15,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:56:15,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:15,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:56:15,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:56:15,093 INFO L87 Difference]: Start difference. First operand 805 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:15,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:15,214 INFO L93 Difference]: Finished difference Result 929 states and 1704 transitions. [2023-12-21 23:56:15,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:56:15,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-21 23:56:15,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:15,219 INFO L225 Difference]: With dead ends: 929 [2023-12-21 23:56:15,219 INFO L226 Difference]: Without dead ends: 898 [2023-12-21 23:56:15,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:56:15,223 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 1571 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:56:15,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 1661 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:56:15,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-12-21 23:56:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 863. [2023-12-21 23:56:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.859465737514518) internal successors, (1601), 862 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1601 transitions. [2023-12-21 23:56:15,242 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1601 transitions. Word has length 32 [2023-12-21 23:56:15,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:15,243 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1601 transitions. [2023-12-21 23:56:15,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:15,244 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1601 transitions. [2023-12-21 23:56:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 23:56:15,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:15,248 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] [2023-12-21 23:56:15,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 23:56:15,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:15,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:15,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1777422384, now seen corresponding path program 1 times [2023-12-21 23:56:15,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:15,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398369515] [2023-12-21 23:56:15,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:15,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:15,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:15,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:15,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 23:56:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:15,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:56:15,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:15,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:15,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:15,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398369515] [2023-12-21 23:56:15,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398369515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:15,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:15,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:56:15,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377179510] [2023-12-21 23:56:15,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:15,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:56:15,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:15,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:56:15,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:15,569 INFO L87 Difference]: Start difference. First operand 863 states and 1601 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:15,614 INFO L93 Difference]: Finished difference Result 1025 states and 1857 transitions. [2023-12-21 23:56:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:56:15,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-21 23:56:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:15,618 INFO L225 Difference]: With dead ends: 1025 [2023-12-21 23:56:15,618 INFO L226 Difference]: Without dead ends: 936 [2023-12-21 23:56:15,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:15,619 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:56:15,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:56:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2023-12-21 23:56:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 931. [2023-12-21 23:56:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 929 states have (on average 1.8331539289558665) internal successors, (1703), 930 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) [2023-12-21 23:56:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1703 transitions. [2023-12-21 23:56:15,638 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1703 transitions. Word has length 34 [2023-12-21 23:56:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:15,639 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1703 transitions. [2023-12-21 23:56:15,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1703 transitions. [2023-12-21 23:56:15,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 23:56:15,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:15,640 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] [2023-12-21 23:56:15,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 23:56:15,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:15,843 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:15,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:15,844 INFO L85 PathProgramCache]: Analyzing trace with hash 672590802, now seen corresponding path program 1 times [2023-12-21 23:56:15,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:15,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619075657] [2023-12-21 23:56:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:15,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:15,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:15,846 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:15,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 23:56:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:15,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 23:56:15,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:15,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:15,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:15,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619075657] [2023-12-21 23:56:15,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619075657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:15,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:15,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 23:56:15,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036935689] [2023-12-21 23:56:15,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:15,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 23:56:15,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:15,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 23:56:15,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:56:15,937 INFO L87 Difference]: Start difference. First operand 931 states and 1703 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:15,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:15,988 INFO L93 Difference]: Finished difference Result 945 states and 1720 transitions. [2023-12-21 23:56:15,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 23:56:15,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-21 23:56:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:15,992 INFO L225 Difference]: With dead ends: 945 [2023-12-21 23:56:15,992 INFO L226 Difference]: Without dead ends: 943 [2023-12-21 23:56:15,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:56:15,993 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4504 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 [2023-12-21 23:56:15,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:56:15,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2023-12-21 23:56:16,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 939. [2023-12-21 23:56:16,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 937 states have (on average 1.8249733191035218) internal successors, (1710), 938 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1710 transitions. [2023-12-21 23:56:16,018 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1710 transitions. Word has length 35 [2023-12-21 23:56:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:16,018 INFO L495 AbstractCegarLoop]: Abstraction has 939 states and 1710 transitions. [2023-12-21 23:56:16,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1710 transitions. [2023-12-21 23:56:16,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:56:16,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:16,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:16,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 23:56:16,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:16,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:16,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:16,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1662873624, now seen corresponding path program 1 times [2023-12-21 23:56:16,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:16,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021497406] [2023-12-21 23:56:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:16,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:16,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:16,230 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:16,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 23:56:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:16,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:56:16,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:16,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:16,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021497406] [2023-12-21 23:56:16,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021497406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:16,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:16,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:56:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320597233] [2023-12-21 23:56:16,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:56:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:56:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:16,336 INFO L87 Difference]: Start difference. First operand 939 states and 1710 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:16,376 INFO L93 Difference]: Finished difference Result 1245 states and 2170 transitions. [2023-12-21 23:56:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:56:16,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:56:16,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:16,382 INFO L225 Difference]: With dead ends: 1245 [2023-12-21 23:56:16,382 INFO L226 Difference]: Without dead ends: 1080 [2023-12-21 23:56:16,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:16,385 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 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 [2023-12-21 23:56:16,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:56:16,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2023-12-21 23:56:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2023-12-21 23:56:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1076 states have (on average 1.7769516728624535) internal successors, (1912), 1077 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1912 transitions. [2023-12-21 23:56:16,406 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1912 transitions. Word has length 36 [2023-12-21 23:56:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:16,406 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1912 transitions. [2023-12-21 23:56:16,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:16,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1912 transitions. [2023-12-21 23:56:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:56:16,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:16,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:16,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 23:56:16,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:16,612 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:16,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:16,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1743360232, now seen corresponding path program 1 times [2023-12-21 23:56:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:16,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258503768] [2023-12-21 23:56:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:16,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:16,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:16,614 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:16,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 23:56:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:16,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:56:16,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:16,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:16,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:16,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258503768] [2023-12-21 23:56:16,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258503768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:16,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:16,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:56:16,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580139523] [2023-12-21 23:56:16,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:16,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:56:16,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:16,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:56:16,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:16,701 INFO L87 Difference]: Start difference. First operand 1078 states and 1912 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:16,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:16,739 INFO L93 Difference]: Finished difference Result 1638 states and 2734 transitions. [2023-12-21 23:56:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:56:16,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:56:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:16,745 INFO L225 Difference]: With dead ends: 1638 [2023-12-21 23:56:16,745 INFO L226 Difference]: Without dead ends: 1334 [2023-12-21 23:56:16,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:16,746 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 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 [2023-12-21 23:56:16,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:56:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2023-12-21 23:56:16,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1332. [2023-12-21 23:56:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1330 states have (on average 1.7052631578947368) internal successors, (2268), 1331 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 2268 transitions. [2023-12-21 23:56:16,771 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 2268 transitions. Word has length 36 [2023-12-21 23:56:16,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:16,772 INFO L495 AbstractCegarLoop]: Abstraction has 1332 states and 2268 transitions. [2023-12-21 23:56:16,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 2268 transitions. [2023-12-21 23:56:16,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 23:56:16,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:16,772 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] [2023-12-21 23:56:16,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-21 23:56:16,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:16,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:16,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1790190323, now seen corresponding path program 1 times [2023-12-21 23:56:16,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:16,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307510249] [2023-12-21 23:56:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:16,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:16,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:16,977 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:16,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 23:56:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:17,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:56:17,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:17,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:17,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:17,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307510249] [2023-12-21 23:56:17,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307510249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:17,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:17,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:56:17,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765980899] [2023-12-21 23:56:17,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:17,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:56:17,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:17,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:56:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:17,088 INFO L87 Difference]: Start difference. First operand 1332 states and 2268 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:17,126 INFO L93 Difference]: Finished difference Result 1915 states and 3138 transitions. [2023-12-21 23:56:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:56:17,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-12-21 23:56:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:17,132 INFO L225 Difference]: With dead ends: 1915 [2023-12-21 23:56:17,132 INFO L226 Difference]: Without dead ends: 1588 [2023-12-21 23:56:17,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:17,133 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 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 [2023-12-21 23:56:17,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:56:17,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2023-12-21 23:56:17,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1586. [2023-12-21 23:56:17,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1586 states, 1584 states have (on average 1.6603535353535352) internal successors, (2630), 1585 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:17,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2630 transitions. [2023-12-21 23:56:17,165 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2630 transitions. Word has length 38 [2023-12-21 23:56:17,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:17,165 INFO L495 AbstractCegarLoop]: Abstraction has 1586 states and 2630 transitions. [2023-12-21 23:56:17,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:17,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2630 transitions. [2023-12-21 23:56:17,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 23:56:17,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:17,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:17,171 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 [2023-12-21 23:56:17,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:17,372 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:17,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:17,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1801881872, now seen corresponding path program 1 times [2023-12-21 23:56:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:17,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538417499] [2023-12-21 23:56:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:17,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:17,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:17,374 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:17,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 23:56:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:17,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:56:17,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:17,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:17,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:17,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538417499] [2023-12-21 23:56:17,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538417499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:17,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:17,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:56:17,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206398824] [2023-12-21 23:56:17,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:17,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:56:17,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:17,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:56:17,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:17,467 INFO L87 Difference]: Start difference. First operand 1586 states and 2630 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:17,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:17,507 INFO L93 Difference]: Finished difference Result 2181 states and 3500 transitions. [2023-12-21 23:56:17,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:56:17,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-21 23:56:17,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:17,512 INFO L225 Difference]: With dead ends: 2181 [2023-12-21 23:56:17,512 INFO L226 Difference]: Without dead ends: 1371 [2023-12-21 23:56:17,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:17,514 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 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 [2023-12-21 23:56:17,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:56:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2023-12-21 23:56:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1369. [2023-12-21 23:56:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1367 states have (on average 1.6949524506217997) internal successors, (2317), 1368 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2317 transitions. [2023-12-21 23:56:17,539 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2317 transitions. Word has length 50 [2023-12-21 23:56:17,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:17,539 INFO L495 AbstractCegarLoop]: Abstraction has 1369 states and 2317 transitions. [2023-12-21 23:56:17,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:17,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2317 transitions. [2023-12-21 23:56:17,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 23:56:17,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:17,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:17,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 23:56:17,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:17,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:17,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash -759813067, now seen corresponding path program 1 times [2023-12-21 23:56:17,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:17,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431196628] [2023-12-21 23:56:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:17,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:17,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:17,747 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:17,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 23:56:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:17,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:56:17,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:18,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:56:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:18,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431196628] [2023-12-21 23:56:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431196628] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:56:18,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:56:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:56:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054791015] [2023-12-21 23:56:18,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:56:18,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:56:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:56:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:56:18,767 INFO L87 Difference]: Start difference. First operand 1369 states and 2317 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:20,347 INFO L93 Difference]: Finished difference Result 2897 states and 4488 transitions. [2023-12-21 23:56:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 23:56:20,348 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 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 52 [2023-12-21 23:56:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:20,355 INFO L225 Difference]: With dead ends: 2897 [2023-12-21 23:56:20,355 INFO L226 Difference]: Without dead ends: 2319 [2023-12-21 23:56:20,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-21 23:56:20,357 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 6292 mSDsluCounter, 12057 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6292 SdHoareTripleChecker+Valid, 13569 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:56:20,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6292 Valid, 13569 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 23:56:20,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2023-12-21 23:56:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 1945. [2023-12-21 23:56:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1945 states, 1943 states have (on average 1.6186309830159546) internal successors, (3145), 1944 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3145 transitions. [2023-12-21 23:56:20,414 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3145 transitions. Word has length 52 [2023-12-21 23:56:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:20,414 INFO L495 AbstractCegarLoop]: Abstraction has 1945 states and 3145 transitions. [2023-12-21 23:56:20,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3145 transitions. [2023-12-21 23:56:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 23:56:20,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:20,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:20,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 23:56:20,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:20,627 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:20,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:20,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1248913717, now seen corresponding path program 1 times [2023-12-21 23:56:20,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:20,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945066699] [2023-12-21 23:56:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:20,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:20,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:20,629 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:20,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 23:56:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:20,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:56:20,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:20,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:20,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:20,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945066699] [2023-12-21 23:56:20,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945066699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:20,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:20,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:56:20,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350562643] [2023-12-21 23:56:20,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:20,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:56:20,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:20,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:56:20,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:20,728 INFO L87 Difference]: Start difference. First operand 1945 states and 3145 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:20,767 INFO L93 Difference]: Finished difference Result 2525 states and 3981 transitions. [2023-12-21 23:56:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:56:20,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-21 23:56:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:20,773 INFO L225 Difference]: With dead ends: 2525 [2023-12-21 23:56:20,773 INFO L226 Difference]: Without dead ends: 1371 [2023-12-21 23:56:20,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:20,775 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 28 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3005 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 [2023-12-21 23:56:20,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:56:20,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2023-12-21 23:56:20,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1369. [2023-12-21 23:56:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1367 states have (on average 1.681784930504755) internal successors, (2299), 1368 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2299 transitions. [2023-12-21 23:56:20,806 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2299 transitions. Word has length 54 [2023-12-21 23:56:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:20,807 INFO L495 AbstractCegarLoop]: Abstraction has 1369 states and 2299 transitions. [2023-12-21 23:56:20,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2299 transitions. [2023-12-21 23:56:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 23:56:20,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:20,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:20,811 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 [2023-12-21 23:56:21,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:21,012 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:21,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash -268698074, now seen corresponding path program 1 times [2023-12-21 23:56:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:21,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845832509] [2023-12-21 23:56:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:21,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:21,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:21,014 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:21,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 23:56:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:21,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:56:21,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:21,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:56:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:22,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:22,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845832509] [2023-12-21 23:56:22,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845832509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:56:22,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:56:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:56:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897499364] [2023-12-21 23:56:22,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:56:22,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:56:22,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:22,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:56:22,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:56:22,131 INFO L87 Difference]: Start difference. First operand 1369 states and 2299 transitions. Second operand has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:23,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:23,222 INFO L93 Difference]: Finished difference Result 2949 states and 4511 transitions. [2023-12-21 23:56:23,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 23:56:23,223 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 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 55 [2023-12-21 23:56:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:23,230 INFO L225 Difference]: With dead ends: 2949 [2023-12-21 23:56:23,230 INFO L226 Difference]: Without dead ends: 2371 [2023-12-21 23:56:23,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-21 23:56:23,233 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 3384 mSDsluCounter, 12022 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3384 SdHoareTripleChecker+Valid, 13553 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 23:56:23,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3384 Valid, 13553 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 23:56:23,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2023-12-21 23:56:23,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2017. [2023-12-21 23:56:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 2015 states have (on average 1.5786600496277916) internal successors, (3181), 2016 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 3181 transitions. [2023-12-21 23:56:23,289 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 3181 transitions. Word has length 55 [2023-12-21 23:56:23,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:23,290 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 3181 transitions. [2023-12-21 23:56:23,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:23,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 3181 transitions. [2023-12-21 23:56:23,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 23:56:23,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:23,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:23,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 23:56:23,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:23,494 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:23,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:23,494 INFO L85 PathProgramCache]: Analyzing trace with hash -803432142, now seen corresponding path program 1 times [2023-12-21 23:56:23,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:23,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018898338] [2023-12-21 23:56:23,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:23,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:23,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:23,496 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:23,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 23:56:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:23,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:56:23,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:23,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:23,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:23,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018898338] [2023-12-21 23:56:23,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018898338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:23,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:23,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:56:23,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151778909] [2023-12-21 23:56:23,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:23,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:56:23,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:23,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:56:23,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:23,636 INFO L87 Difference]: Start difference. First operand 2017 states and 3181 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:23,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:23,677 INFO L93 Difference]: Finished difference Result 2579 states and 3955 transitions. [2023-12-21 23:56:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:56:23,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-12-21 23:56:23,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:23,682 INFO L225 Difference]: With dead ends: 2579 [2023-12-21 23:56:23,682 INFO L226 Difference]: Without dead ends: 1353 [2023-12-21 23:56:23,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:23,684 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 24 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2990 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 [2023-12-21 23:56:23,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:56:23,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2023-12-21 23:56:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1351. [2023-12-21 23:56:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1349 states have (on average 1.659006671608599) internal successors, (2238), 1350 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:23,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 2238 transitions. [2023-12-21 23:56:23,717 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 2238 transitions. Word has length 57 [2023-12-21 23:56:23,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:23,717 INFO L495 AbstractCegarLoop]: Abstraction has 1351 states and 2238 transitions. [2023-12-21 23:56:23,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:23,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 2238 transitions. [2023-12-21 23:56:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 23:56:23,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:23,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:23,722 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 [2023-12-21 23:56:23,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:23,921 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:23,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1421823177, now seen corresponding path program 1 times [2023-12-21 23:56:23,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:23,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831512101] [2023-12-21 23:56:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:23,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:23,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:23,923 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:23,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 23:56:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:23,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:56:23,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:24,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:56:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:24,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:24,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831512101] [2023-12-21 23:56:24,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831512101] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:56:24,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:56:24,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:56:24,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142608824] [2023-12-21 23:56:24,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:56:24,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:56:24,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:56:24,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:56:24,835 INFO L87 Difference]: Start difference. First operand 1351 states and 2238 transitions. Second operand has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:25,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:25,647 INFO L93 Difference]: Finished difference Result 2425 states and 3671 transitions. [2023-12-21 23:56:25,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 23:56:25,648 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-21 23:56:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:25,652 INFO L225 Difference]: With dead ends: 2425 [2023-12-21 23:56:25,652 INFO L226 Difference]: Without dead ends: 1865 [2023-12-21 23:56:25,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-21 23:56:25,654 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 4741 mSDsluCounter, 10464 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4741 SdHoareTripleChecker+Valid, 11977 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 23:56:25,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4741 Valid, 11977 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 23:56:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2023-12-21 23:56:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1747. [2023-12-21 23:56:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1745 states have (on average 1.574785100286533) internal successors, (2748), 1746 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2748 transitions. [2023-12-21 23:56:25,731 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2748 transitions. Word has length 58 [2023-12-21 23:56:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:25,732 INFO L495 AbstractCegarLoop]: Abstraction has 1747 states and 2748 transitions. [2023-12-21 23:56:25,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:25,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2748 transitions. [2023-12-21 23:56:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 23:56:25,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:25,732 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] [2023-12-21 23:56:25,740 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 (15)] Ended with exit code 0 [2023-12-21 23:56:25,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:25,936 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:25,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:25,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1301279960, now seen corresponding path program 1 times [2023-12-21 23:56:25,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:25,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298422078] [2023-12-21 23:56:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:25,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:25,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:25,938 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:25,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 23:56:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:25,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:56:25,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:56:26,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:56:26,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:26,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298422078] [2023-12-21 23:56:26,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298422078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:56:26,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:56:26,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:56:26,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836251761] [2023-12-21 23:56:26,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:56:26,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:56:26,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:56:26,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:26,078 INFO L87 Difference]: Start difference. First operand 1747 states and 2748 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:58,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:58,372 INFO L93 Difference]: Finished difference Result 3251 states and 5621 transitions. [2023-12-21 23:56:58,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:56:58,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-21 23:56:58,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:58,378 INFO L225 Difference]: With dead ends: 3251 [2023-12-21 23:56:58,378 INFO L226 Difference]: Without dead ends: 2498 [2023-12-21 23:56:58,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:56:58,379 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 806 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2023-12-21 23:56:58,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 613 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 32.2s Time] [2023-12-21 23:56:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2023-12-21 23:56:58,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2498. [2023-12-21 23:56:58,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2496 states have (on average 1.4643429487179487) internal successors, (3655), 2497 states have internal predecessors, (3655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3655 transitions. [2023-12-21 23:56:58,437 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3655 transitions. Word has length 59 [2023-12-21 23:56:58,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:58,437 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 3655 transitions. [2023-12-21 23:56:58,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:58,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3655 transitions. [2023-12-21 23:56:58,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 23:56:58,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:58,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:56:58,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-21 23:56:58,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:58,639 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:58,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash -337476511, now seen corresponding path program 1 times [2023-12-21 23:56:58,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:58,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129937815] [2023-12-21 23:56:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:58,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:58,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:58,641 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:58,656 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 (17)] Waiting until timeout for monitored process [2023-12-21 23:56:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:58,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 23:56:58,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:56:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 23:56:58,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:56:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 23:56:58,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:56:58,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129937815] [2023-12-21 23:56:58,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129937815] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:56:58,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:56:58,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 23:56:58,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560648811] [2023-12-21 23:56:58,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:56:58,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 23:56:58,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:56:58,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 23:56:58,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:56:58,942 INFO L87 Difference]: Start difference. First operand 2498 states and 3655 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:59,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:56:59,089 INFO L93 Difference]: Finished difference Result 4402 states and 6121 transitions. [2023-12-21 23:56:59,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:56:59,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 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 60 [2023-12-21 23:56:59,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:56:59,100 INFO L225 Difference]: With dead ends: 4402 [2023-12-21 23:56:59,100 INFO L226 Difference]: Without dead ends: 3446 [2023-12-21 23:56:59,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:56:59,102 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1484 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:56:59,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 3130 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:56:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2023-12-21 23:56:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 3426. [2023-12-21 23:56:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 3424 states have (on average 1.375) internal successors, (4708), 3425 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:59,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4708 transitions. [2023-12-21 23:56:59,218 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4708 transitions. Word has length 60 [2023-12-21 23:56:59,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:56:59,218 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 4708 transitions. [2023-12-21 23:56:59,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4708 transitions. [2023-12-21 23:56:59,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 23:56:59,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:56:59,221 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 23:56:59,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-21 23:56:59,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:59,421 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:56:59,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:56:59,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1239890541, now seen corresponding path program 1 times [2023-12-21 23:56:59,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:56:59,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232800388] [2023-12-21 23:56:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:56:59,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:56:59,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:56:59,423 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:56:59,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 23:56:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:56:59,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 23:56:59,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:00,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:57:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:01,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:01,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232800388] [2023-12-21 23:57:01,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232800388] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:57:01,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:57:01,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 23:57:01,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210950684] [2023-12-21 23:57:01,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:57:01,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:57:01,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:01,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:57:01,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:57:01,146 INFO L87 Difference]: Start difference. First operand 3426 states and 4708 transitions. Second operand has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 25 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:02,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:02,623 INFO L93 Difference]: Finished difference Result 4672 states and 6278 transitions. [2023-12-21 23:57:02,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 23:57:02,624 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 25 states have internal predecessors, (174), 0 states have call successors, (0), 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 95 [2023-12-21 23:57:02,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:02,630 INFO L225 Difference]: With dead ends: 4672 [2023-12-21 23:57:02,630 INFO L226 Difference]: Without dead ends: 3460 [2023-12-21 23:57:02,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 23:57:02,632 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 19203 mSDsluCounter, 6162 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19203 SdHoareTripleChecker+Valid, 7660 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:02,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19203 Valid, 7660 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 23:57:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2023-12-21 23:57:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3426. [2023-12-21 23:57:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 3424 states have (on average 1.3656542056074767) internal successors, (4676), 3425 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:02,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4676 transitions. [2023-12-21 23:57:02,716 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4676 transitions. Word has length 95 [2023-12-21 23:57:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:02,717 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 4676 transitions. [2023-12-21 23:57:02,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 25 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:02,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4676 transitions. [2023-12-21 23:57:02,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 23:57:02,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:02,718 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:02,721 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 [2023-12-21 23:57:02,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:02,919 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:02,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:02,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1998340414, now seen corresponding path program 1 times [2023-12-21 23:57:02,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:02,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889335482] [2023-12-21 23:57:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:02,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:02,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:02,921 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:57:02,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-21 23:57:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:02,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 23:57:02,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:04,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:57:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:04,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:04,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889335482] [2023-12-21 23:57:04,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889335482] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:57:04,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:57:04,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 23:57:04,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457585417] [2023-12-21 23:57:04,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:57:04,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:57:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:04,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:57:04,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:57:04,549 INFO L87 Difference]: Start difference. First operand 3426 states and 4676 transitions. Second operand has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 25 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:06,581 INFO L93 Difference]: Finished difference Result 4340 states and 5812 transitions. [2023-12-21 23:57:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 23:57:06,582 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 25 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-21 23:57:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:06,586 INFO L225 Difference]: With dead ends: 4340 [2023-12-21 23:57:06,587 INFO L226 Difference]: Without dead ends: 3562 [2023-12-21 23:57:06,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 23:57:06,588 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 16300 mSDsluCounter, 7781 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16300 SdHoareTripleChecker+Valid, 9279 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:06,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16300 Valid, 9279 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 23:57:06,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2023-12-21 23:57:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3426. [2023-12-21 23:57:06,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 3424 states have (on average 1.360981308411215) internal successors, (4660), 3425 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4660 transitions. [2023-12-21 23:57:06,699 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4660 transitions. Word has length 96 [2023-12-21 23:57:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:06,699 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 4660 transitions. [2023-12-21 23:57:06,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 25 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4660 transitions. [2023-12-21 23:57:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 23:57:06,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:06,701 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:06,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:06,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:06,904 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:06,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1674432131, now seen corresponding path program 1 times [2023-12-21 23:57:06,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:06,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528424510] [2023-12-21 23:57:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:06,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:06,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:06,906 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:57:06,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-21 23:57:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:06,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:57:06,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:08,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:57:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:08,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:08,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528424510] [2023-12-21 23:57:08,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528424510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:57:08,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:57:08,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:57:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843182240] [2023-12-21 23:57:08,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:57:08,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:57:08,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:08,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:57:08,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:57:08,807 INFO L87 Difference]: Start difference. First operand 3426 states and 4660 transitions. Second operand has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 26 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:13,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:13,163 INFO L93 Difference]: Finished difference Result 4698 states and 6200 transitions. [2023-12-21 23:57:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 23:57:13,164 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 26 states have internal predecessors, (188), 0 states have call successors, (0), 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 97 [2023-12-21 23:57:13,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:13,172 INFO L225 Difference]: With dead ends: 4698 [2023-12-21 23:57:13,172 INFO L226 Difference]: Without dead ends: 3886 [2023-12-21 23:57:13,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 23:57:13,175 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 6684 mSDsluCounter, 20101 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6684 SdHoareTripleChecker+Valid, 21679 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:13,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6684 Valid, 21679 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 23:57:13,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2023-12-21 23:57:13,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 2766. [2023-12-21 23:57:13,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2764 states have (on average 1.3983357452966716) internal successors, (3865), 2765 states have internal predecessors, (3865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:13,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3865 transitions. [2023-12-21 23:57:13,241 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3865 transitions. Word has length 97 [2023-12-21 23:57:13,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:13,242 INFO L495 AbstractCegarLoop]: Abstraction has 2766 states and 3865 transitions. [2023-12-21 23:57:13,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 26 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3865 transitions. [2023-12-21 23:57:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 23:57:13,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:13,243 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:13,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:13,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:13,447 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:13,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:13,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2029137703, now seen corresponding path program 1 times [2023-12-21 23:57:13,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:13,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263391030] [2023-12-21 23:57:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:13,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:13,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:13,449 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:57:13,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-21 23:57:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:13,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:57:13,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:14,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:57:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:15,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:15,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263391030] [2023-12-21 23:57:15,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263391030] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:57:15,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:57:15,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:57:15,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48010986] [2023-12-21 23:57:15,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:57:15,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:57:15,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:57:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:57:15,182 INFO L87 Difference]: Start difference. First operand 2766 states and 3865 transitions. Second operand has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:20,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:20,551 INFO L93 Difference]: Finished difference Result 3723 states and 5022 transitions. [2023-12-21 23:57:20,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 23:57:20,552 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 0 states have call successors, (0), 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 97 [2023-12-21 23:57:20,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:20,556 INFO L225 Difference]: With dead ends: 3723 [2023-12-21 23:57:20,556 INFO L226 Difference]: Without dead ends: 3401 [2023-12-21 23:57:20,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 23:57:20,558 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 3551 mSDsluCounter, 24880 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3551 SdHoareTripleChecker+Valid, 26467 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:20,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3551 Valid, 26467 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 23:57:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2023-12-21 23:57:20,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3011. [2023-12-21 23:57:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 3009 states have (on average 1.3808574277168495) internal successors, (4155), 3010 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 4155 transitions. [2023-12-21 23:57:20,669 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 4155 transitions. Word has length 97 [2023-12-21 23:57:20,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:20,669 INFO L495 AbstractCegarLoop]: Abstraction has 3011 states and 4155 transitions. [2023-12-21 23:57:20,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:20,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 4155 transitions. [2023-12-21 23:57:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 23:57:20,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:20,671 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:20,677 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 [2023-12-21 23:57:20,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:20,874 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:20,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash -479947517, now seen corresponding path program 1 times [2023-12-21 23:57:20,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:20,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983944871] [2023-12-21 23:57:20,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:20,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:20,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:20,876 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:57:20,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 23:57:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:20,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:57:20,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 31 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:22,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:57:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 31 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:22,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:22,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983944871] [2023-12-21 23:57:22,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983944871] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:57:22,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:57:22,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:57:22,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141963736] [2023-12-21 23:57:22,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:57:22,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:57:22,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:22,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:57:22,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:57:22,604 INFO L87 Difference]: Start difference. First operand 3011 states and 4155 transitions. Second operand has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 26 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:27,999 INFO L93 Difference]: Finished difference Result 5720 states and 7366 transitions. [2023-12-21 23:57:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 23:57:27,999 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 26 states have internal predecessors, (178), 0 states have call successors, (0), 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 97 [2023-12-21 23:57:28,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:28,007 INFO L225 Difference]: With dead ends: 5720 [2023-12-21 23:57:28,008 INFO L226 Difference]: Without dead ends: 5287 [2023-12-21 23:57:28,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 23:57:28,010 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 2076 mSDsluCounter, 20422 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 22025 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:28,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 22025 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 23:57:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2023-12-21 23:57:28,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 4339. [2023-12-21 23:57:28,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4339 states, 4337 states have (on average 1.3195757436015678) internal successors, (5723), 4338 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4339 states to 4339 states and 5723 transitions. [2023-12-21 23:57:28,241 INFO L78 Accepts]: Start accepts. Automaton has 4339 states and 5723 transitions. Word has length 97 [2023-12-21 23:57:28,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:28,242 INFO L495 AbstractCegarLoop]: Abstraction has 4339 states and 5723 transitions. [2023-12-21 23:57:28,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 26 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4339 states and 5723 transitions. [2023-12-21 23:57:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 23:57:28,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:28,245 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, 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] [2023-12-21 23:57:28,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:28,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:28,453 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:28,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:28,453 INFO L85 PathProgramCache]: Analyzing trace with hash 535694953, now seen corresponding path program 1 times [2023-12-21 23:57:28,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:28,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197980518] [2023-12-21 23:57:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:28,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:28,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:28,455 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:57:28,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 23:57:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:28,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 23:57:28,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:29,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:29,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:29,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197980518] [2023-12-21 23:57:29,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197980518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:29,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:29,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:57:29,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203625657] [2023-12-21 23:57:29,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:29,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 23:57:29,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 23:57:29,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:57:29,239 INFO L87 Difference]: Start difference. First operand 4339 states and 5723 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:54,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:54,519 INFO L93 Difference]: Finished difference Result 6628 states and 9008 transitions. [2023-12-21 23:57:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 23:57:54,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-21 23:57:54,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:54,525 INFO L225 Difference]: With dead ends: 6628 [2023-12-21 23:57:54,525 INFO L226 Difference]: Without dead ends: 5090 [2023-12-21 23:57:54,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:57:54,527 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 748 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:54,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 828 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 25.0s Time] [2023-12-21 23:57:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5090 states. [2023-12-21 23:57:54,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5090 to 5090. [2023-12-21 23:57:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5090 states, 5088 states have (on average 1.274567610062893) internal successors, (6485), 5089 states have internal predecessors, (6485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 6485 transitions. [2023-12-21 23:57:54,762 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 6485 transitions. Word has length 130 [2023-12-21 23:57:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:54,762 INFO L495 AbstractCegarLoop]: Abstraction has 5090 states and 6485 transitions. [2023-12-21 23:57:54,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:54,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 6485 transitions. [2023-12-21 23:57:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:57:54,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:54,766 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:54,770 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 (23)] Ended with exit code 0 [2023-12-21 23:57:54,970 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 [2023-12-21 23:57:54,970 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:54,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:54,971 INFO L85 PathProgramCache]: Analyzing trace with hash 52506505, now seen corresponding path program 2 times [2023-12-21 23:57:54,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:54,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839290265] [2023-12-21 23:57:54,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:57:54,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:54,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:54,973 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) [2023-12-21 23:57:54,975 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 [2023-12-21 23:57:55,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:57:55,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:57:55,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:57:55,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-21 23:57:55,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:55,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839290265] [2023-12-21 23:57:55,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839290265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:55,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:55,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:57:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702782626] [2023-12-21 23:57:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:55,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:57:55,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:55,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:57:55,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:57:55,455 INFO L87 Difference]: Start difference. First operand 5090 states and 6485 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:55,669 INFO L93 Difference]: Finished difference Result 6144 states and 7801 transitions. [2023-12-21 23:57:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:57:55,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:57:55,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:55,678 INFO L225 Difference]: With dead ends: 6144 [2023-12-21 23:57:55,678 INFO L226 Difference]: Without dead ends: 5226 [2023-12-21 23:57:55,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:57:55,680 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 1535 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:55,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 3111 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:57:55,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2023-12-21 23:57:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 5070. [2023-12-21 23:57:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5070 states, 5068 states have (on average 1.2667719021310182) internal successors, (6420), 5069 states have internal predecessors, (6420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5070 states to 5070 states and 6420 transitions. [2023-12-21 23:57:55,929 INFO L78 Accepts]: Start accepts. Automaton has 5070 states and 6420 transitions. Word has length 136 [2023-12-21 23:57:55,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:55,930 INFO L495 AbstractCegarLoop]: Abstraction has 5070 states and 6420 transitions. [2023-12-21 23:57:55,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5070 states and 6420 transitions. [2023-12-21 23:57:55,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:57:55,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:55,934 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:55,943 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 [2023-12-21 23:57:56,137 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 [2023-12-21 23:57:56,137 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:56,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:56,138 INFO L85 PathProgramCache]: Analyzing trace with hash 407212077, now seen corresponding path program 2 times [2023-12-21 23:57:56,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:56,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441584782] [2023-12-21 23:57:56,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:57:56,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:56,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:56,139 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:57:56,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-21 23:57:56,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:57:56,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:57:56,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:57:56,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-12-21 23:57:56,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:56,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:56,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441584782] [2023-12-21 23:57:56,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441584782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:56,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:56,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:57:56,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771755627] [2023-12-21 23:57:56,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:56,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:57:56,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:56,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:57:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:57:56,647 INFO L87 Difference]: Start difference. First operand 5070 states and 6420 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:56,858 INFO L93 Difference]: Finished difference Result 5719 states and 7249 transitions. [2023-12-21 23:57:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:57:56,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:57:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:56,862 INFO L225 Difference]: With dead ends: 5719 [2023-12-21 23:57:56,862 INFO L226 Difference]: Without dead ends: 5340 [2023-12-21 23:57:56,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:57:56,863 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 2974 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:56,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2974 Valid, 3116 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:57:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5340 states. [2023-12-21 23:57:57,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5340 to 5262. [2023-12-21 23:57:57,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5262 states, 5260 states have (on average 1.2608365019011407) internal successors, (6632), 5261 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:57,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 6632 transitions. [2023-12-21 23:57:57,073 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 6632 transitions. Word has length 136 [2023-12-21 23:57:57,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:57,074 INFO L495 AbstractCegarLoop]: Abstraction has 5262 states and 6632 transitions. [2023-12-21 23:57:57,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 6632 transitions. [2023-12-21 23:57:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:57:57,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:57,077 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:57,083 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 [2023-12-21 23:57:57,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:57,286 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:57,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:57,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2101873143, now seen corresponding path program 2 times [2023-12-21 23:57:57,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:57,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453175619] [2023-12-21 23:57:57,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:57:57,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:57,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:57,288 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:57:57,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-21 23:57:57,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:57:57,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:57:57,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:57:57,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-21 23:57:57,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:57:57,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:57:57,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453175619] [2023-12-21 23:57:57,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453175619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:57:57,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:57:57,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:57:57,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723931080] [2023-12-21 23:57:57,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:57:57,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:57:57,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:57:57,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:57:57,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:57:57,772 INFO L87 Difference]: Start difference. First operand 5262 states and 6632 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:57,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:57:57,999 INFO L93 Difference]: Finished difference Result 5929 states and 7482 transitions. [2023-12-21 23:57:58,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:57:58,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:57:58,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:57:58,004 INFO L225 Difference]: With dead ends: 5929 [2023-12-21 23:57:58,004 INFO L226 Difference]: Without dead ends: 5538 [2023-12-21 23:57:58,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:57:58,005 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 2969 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2969 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:58,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2969 Valid, 3113 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:57:58,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5538 states. [2023-12-21 23:57:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 5460. [2023-12-21 23:57:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5460 states, 5458 states have (on average 1.2552216929278124) internal successors, (6851), 5459 states have internal predecessors, (6851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5460 states to 5460 states and 6851 transitions. [2023-12-21 23:57:58,196 INFO L78 Accepts]: Start accepts. Automaton has 5460 states and 6851 transitions. Word has length 136 [2023-12-21 23:57:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:57:58,197 INFO L495 AbstractCegarLoop]: Abstraction has 5460 states and 6851 transitions. [2023-12-21 23:57:58,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:57:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5460 states and 6851 transitions. [2023-12-21 23:57:58,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 23:57:58,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:57:58,200 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:58,203 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 [2023-12-21 23:57:58,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:58,403 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:57:58,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:57:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1022663278, now seen corresponding path program 1 times [2023-12-21 23:57:58,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:57:58,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321261368] [2023-12-21 23:57:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:57:58,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:58,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:57:58,405 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:57:58,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-21 23:57:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:57:58,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 23:57:58,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:57:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 54 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:57:59,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:58:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 54 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:58:01,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:58:01,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321261368] [2023-12-21 23:58:01,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321261368] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:58:01,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:58:01,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:58:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274171240] [2023-12-21 23:58:01,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:58:01,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:58:01,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:58:01,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:58:01,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:58:01,178 INFO L87 Difference]: Start difference. First operand 5460 states and 6851 transitions. Second operand has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:58:16,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:58:16,054 INFO L93 Difference]: Finished difference Result 7171 states and 8872 transitions. [2023-12-21 23:58:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-21 23:58:16,055 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 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 137 [2023-12-21 23:58:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:58:16,061 INFO L225 Difference]: With dead ends: 7171 [2023-12-21 23:58:16,061 INFO L226 Difference]: Without dead ends: 5957 [2023-12-21 23:58:16,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7456 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=3247, Invalid=20933, Unknown=0, NotChecked=0, Total=24180 [2023-12-21 23:58:16,066 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 24353 mSDsluCounter, 14304 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24353 SdHoareTripleChecker+Valid, 15938 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-21 23:58:16,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24353 Valid, 15938 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2799 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-21 23:58:16,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5957 states. [2023-12-21 23:58:16,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5957 to 5700. [2023-12-21 23:58:16,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5698 states have (on average 1.2513162513162512) internal successors, (7130), 5699 states have internal predecessors, (7130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:58:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 7130 transitions. [2023-12-21 23:58:16,290 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 7130 transitions. Word has length 137 [2023-12-21 23:58:16,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:58:16,290 INFO L495 AbstractCegarLoop]: Abstraction has 5700 states and 7130 transitions. [2023-12-21 23:58:16,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:58:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 7130 transitions. [2023-12-21 23:58:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 23:58:16,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:58:16,293 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:58:16,300 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 [2023-12-21 23:58:16,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:58:16,500 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:58:16,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:58:16,500 INFO L85 PathProgramCache]: Analyzing trace with hash 550432786, now seen corresponding path program 1 times [2023-12-21 23:58:16,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:58:16,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71752174] [2023-12-21 23:58:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:58:16,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:58:16,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:58:16,502 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:58:16,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-21 23:58:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:58:16,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 23:58:16,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:58:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 134 proven. 52 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 23:58:18,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:58:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 63 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:58:21,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:58:21,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71752174] [2023-12-21 23:58:21,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71752174] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:58:21,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:58:21,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 39 [2023-12-21 23:58:21,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572552122] [2023-12-21 23:58:21,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:58:21,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 23:58:21,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:58:21,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 23:58:21,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1318, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 23:58:21,704 INFO L87 Difference]: Start difference. First operand 5700 states and 7130 transitions. Second operand has 39 states, 39 states have (on average 6.128205128205129) internal successors, (239), 39 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:54,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:59:54,454 INFO L93 Difference]: Finished difference Result 11177 states and 13499 transitions. [2023-12-21 23:59:54,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 304 states. [2023-12-21 23:59:54,456 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.128205128205129) internal successors, (239), 39 states have internal predecessors, (239), 0 states have call successors, (0), 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 137 [2023-12-21 23:59:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:59:54,463 INFO L225 Difference]: With dead ends: 11177 [2023-12-21 23:59:54,463 INFO L226 Difference]: Without dead ends: 8649 [2023-12-21 23:59:54,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47300 ImplicationChecksByTransitivity, 84.0s TimeCoverageRelationStatistics Valid=12461, Invalid=99429, Unknown=0, NotChecked=0, Total=111890 [2023-12-21 23:59:54,473 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 26865 mSDsluCounter, 20559 mSDsCounter, 0 mSdLazyCounter, 3651 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26865 SdHoareTripleChecker+Valid, 22195 SdHoareTripleChecker+Invalid, 3877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 3651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:59:54,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26865 Valid, 22195 Invalid, 3877 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [226 Valid, 3651 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-12-21 23:59:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8649 states. [2023-12-21 23:59:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8649 to 6789. [2023-12-21 23:59:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6789 states, 6787 states have (on average 1.237070870782378) internal successors, (8396), 6788 states have internal predecessors, (8396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6789 states to 6789 states and 8396 transitions. [2023-12-21 23:59:54,826 INFO L78 Accepts]: Start accepts. Automaton has 6789 states and 8396 transitions. Word has length 137 [2023-12-21 23:59:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:59:54,826 INFO L495 AbstractCegarLoop]: Abstraction has 6789 states and 8396 transitions. [2023-12-21 23:59:54,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.128205128205129) internal successors, (239), 39 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:59:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6789 states and 8396 transitions. [2023-12-21 23:59:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 23:59:54,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:59:54,830 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:59:54,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-21 23:59:55,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:59:55,034 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:59:55,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:59:55,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1444955941, now seen corresponding path program 1 times [2023-12-21 23:59:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:59:55,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47656354] [2023-12-21 23:59:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:59:55,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:59:55,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:59:55,036 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:59:55,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-21 23:59:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:59:55,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 23:59:55,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:59:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 131 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 23:59:57,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:59:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 131 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 23:59:58,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:59:58,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47656354] [2023-12-21 23:59:58,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47656354] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:59:58,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:59:58,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:59:58,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550391366] [2023-12-21 23:59:58,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:59:58,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:59:58,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:59:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:59:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:59:58,794 INFO L87 Difference]: Start difference. First operand 6789 states and 8396 transitions. Second operand has 34 states, 34 states have (on average 6.323529411764706) internal successors, (215), 34 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:00:49,639 INFO L93 Difference]: Finished difference Result 11414 states and 13810 transitions. [2023-12-22 00:00:49,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2023-12-22 00:00:49,640 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.323529411764706) internal successors, (215), 34 states have internal predecessors, (215), 0 states have call successors, (0), 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 138 [2023-12-22 00:00:49,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:00:49,650 INFO L225 Difference]: With dead ends: 11414 [2023-12-22 00:00:49,650 INFO L226 Difference]: Without dead ends: 10133 [2023-12-22 00:00:49,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14589 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=5810, Invalid=31246, Unknown=0, NotChecked=0, Total=37056 [2023-12-22 00:00:49,654 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 17746 mSDsluCounter, 20601 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17746 SdHoareTripleChecker+Valid, 22219 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:00:49,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17746 Valid, 22219 Invalid, 2786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-22 00:00:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10133 states. [2023-12-22 00:00:50,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10133 to 8765. [2023-12-22 00:00:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8765 states, 8763 states have (on average 1.2203583247746206) internal successors, (10694), 8764 states have internal predecessors, (10694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8765 states to 8765 states and 10694 transitions. [2023-12-22 00:00:50,182 INFO L78 Accepts]: Start accepts. Automaton has 8765 states and 10694 transitions. Word has length 138 [2023-12-22 00:00:50,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:00:50,182 INFO L495 AbstractCegarLoop]: Abstraction has 8765 states and 10694 transitions. [2023-12-22 00:00:50,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.323529411764706) internal successors, (215), 34 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:00:50,182 INFO L276 IsEmpty]: Start isEmpty. Operand 8765 states and 10694 transitions. [2023-12-22 00:00:50,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-22 00:00:50,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:00:50,185 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:00:50,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-22 00:00:50,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:00:50,386 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:00:50,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:00:50,386 INFO L85 PathProgramCache]: Analyzing trace with hash -257748441, now seen corresponding path program 1 times [2023-12-22 00:00:50,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:00:50,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146304684] [2023-12-22 00:00:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:00:50,387 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 00:00:50,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:00:50,388 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:00:50,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-22 00:00:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:00:50,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-22 00:00:50,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:00:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 133 proven. 61 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-22 00:00:52,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:00:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 133 proven. 61 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-22 00:00:54,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:00:54,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146304684] [2023-12-22 00:00:54,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146304684] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:00:54,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:00:54,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-22 00:00:54,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393197884] [2023-12-22 00:00:54,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:00:54,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-22 00:00:54,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:00:54,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-22 00:00:54,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2023-12-22 00:00:54,474 INFO L87 Difference]: Start difference. First operand 8765 states and 10694 transitions. Second operand has 34 states, 34 states have (on average 6.0588235294117645) internal successors, (206), 34 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:01:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:01:49,966 INFO L93 Difference]: Finished difference Result 14241 states and 17171 transitions. [2023-12-22 00:01:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-22 00:01:49,966 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.0588235294117645) internal successors, (206), 34 states have internal predecessors, (206), 0 states have call successors, (0), 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 138 [2023-12-22 00:01:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:01:49,977 INFO L225 Difference]: With dead ends: 14241 [2023-12-22 00:01:49,977 INFO L226 Difference]: Without dead ends: 11920 [2023-12-22 00:01:49,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19475 ImplicationChecksByTransitivity, 51.1s TimeCoverageRelationStatistics Valid=7234, Invalid=42272, Unknown=0, NotChecked=0, Total=49506 [2023-12-22 00:01:49,983 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 21114 mSDsluCounter, 15355 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21114 SdHoareTripleChecker+Valid, 16961 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-22 00:01:49,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21114 Valid, 16961 Invalid, 2014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-22 00:01:49,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11920 states. [2023-12-22 00:01:50,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11920 to 9942. [2023-12-22 00:01:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9942 states, 9940 states have (on average 1.2159959758551309) internal successors, (12087), 9941 states have internal predecessors, (12087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:01:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9942 states to 9942 states and 12087 transitions. [2023-12-22 00:01:50,700 INFO L78 Accepts]: Start accepts. Automaton has 9942 states and 12087 transitions. Word has length 138 [2023-12-22 00:01:50,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:01:50,700 INFO L495 AbstractCegarLoop]: Abstraction has 9942 states and 12087 transitions. [2023-12-22 00:01:50,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.0588235294117645) internal successors, (206), 34 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:01:50,701 INFO L276 IsEmpty]: Start isEmpty. Operand 9942 states and 12087 transitions. [2023-12-22 00:01:50,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-22 00:01:50,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:01:50,704 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 00:01:50,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-22 00:01:50,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:01:50,908 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:01:50,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:01:50,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1380241961, now seen corresponding path program 1 times [2023-12-22 00:01:50,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:01:50,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278820445] [2023-12-22 00:01:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:01:50,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:01:50,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:01:50,910 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:01:50,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-22 00:01:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:01:51,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 00:01:51,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:01:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 15 proven. 191 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-22 00:01:51,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:01:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 15 proven. 191 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-22 00:01:51,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:01:51,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278820445] [2023-12-22 00:01:51,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278820445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:01:51,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:01:51,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-22 00:01:51,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485692659] [2023-12-22 00:01:51,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:01:51,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 00:01:51,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:01:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 00:01:51,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-22 00:01:51,510 INFO L87 Difference]: Start difference. First operand 9942 states and 12087 transitions. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:01:53,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:01:53,261 INFO L93 Difference]: Finished difference Result 34198 states and 41858 transitions. [2023-12-22 00:01:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 00:01:53,262 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 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 140 [2023-12-22 00:01:53,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:01:53,295 INFO L225 Difference]: With dead ends: 34198 [2023-12-22 00:01:53,295 INFO L226 Difference]: Without dead ends: 26878 [2023-12-22 00:01:53,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-22 00:01:53,303 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 3142 mSDsluCounter, 7822 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3142 SdHoareTripleChecker+Valid, 9386 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 00:01:53,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3142 Valid, 9386 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 00:01:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26878 states. [2023-12-22 00:01:55,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26878 to 26782. [2023-12-22 00:01:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26782 states, 26780 states have (on average 1.14865571321882) internal successors, (30761), 26781 states have internal predecessors, (30761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:01:55,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26782 states to 26782 states and 30761 transitions. [2023-12-22 00:01:55,109 INFO L78 Accepts]: Start accepts. Automaton has 26782 states and 30761 transitions. Word has length 140 [2023-12-22 00:01:55,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:01:55,109 INFO L495 AbstractCegarLoop]: Abstraction has 26782 states and 30761 transitions. [2023-12-22 00:01:55,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:01:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 26782 states and 30761 transitions. [2023-12-22 00:01:55,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-22 00:01:55,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:01:55,113 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:01:55,120 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 00:01:55,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:01:55,318 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:01:55,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:01:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash -410747134, now seen corresponding path program 1 times [2023-12-22 00:01:55,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:01:55,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474271185] [2023-12-22 00:01:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:01:55,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:01:55,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:01:55,320 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:01:55,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-22 00:01:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:01:55,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-22 00:01:55,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:01:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 32 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:01:57,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:01:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 32 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:01:57,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:01:57,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474271185] [2023-12-22 00:01:57,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474271185] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:01:57,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:01:57,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-22 00:01:57,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455370809] [2023-12-22 00:01:57,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:01:57,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-22 00:01:57,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:01:57,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-22 00:01:57,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-12-22 00:01:57,921 INFO L87 Difference]: Start difference. First operand 26782 states and 30761 transitions. Second operand has 34 states, 34 states have (on average 8.029411764705882) internal successors, (273), 34 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:02:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:02:04,565 INFO L93 Difference]: Finished difference Result 38666 states and 44450 transitions. [2023-12-22 00:02:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-22 00:02:04,566 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.029411764705882) internal successors, (273), 34 states have internal predecessors, (273), 0 states have call successors, (0), 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 141 [2023-12-22 00:02:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:02:04,590 INFO L225 Difference]: With dead ends: 38666 [2023-12-22 00:02:04,591 INFO L226 Difference]: Without dead ends: 22060 [2023-12-22 00:02:04,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=914, Invalid=5248, Unknown=0, NotChecked=0, Total=6162 [2023-12-22 00:02:04,601 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 23477 mSDsluCounter, 12244 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23477 SdHoareTripleChecker+Valid, 13790 SdHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-22 00:02:04,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23477 Valid, 13790 Invalid, 2160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-22 00:02:04,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22060 states. [2023-12-22 00:02:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22060 to 18071. [2023-12-22 00:02:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18071 states, 18069 states have (on average 1.1490951353146273) internal successors, (20763), 18070 states have internal predecessors, (20763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:02:05,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18071 states to 18071 states and 20763 transitions. [2023-12-22 00:02:05,746 INFO L78 Accepts]: Start accepts. Automaton has 18071 states and 20763 transitions. Word has length 141 [2023-12-22 00:02:05,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:02:05,746 INFO L495 AbstractCegarLoop]: Abstraction has 18071 states and 20763 transitions. [2023-12-22 00:02:05,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.029411764705882) internal successors, (273), 34 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:02:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 18071 states and 20763 transitions. [2023-12-22 00:02:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-22 00:02:05,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:02:05,750 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:02:05,754 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 00:02:05,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:02:05,951 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:02:05,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:02:05,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1839070306, now seen corresponding path program 1 times [2023-12-22 00:02:05,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:02:05,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538752701] [2023-12-22 00:02:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:02:05,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:02:05,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:02:05,953 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:02:05,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-22 00:02:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:02:06,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-22 00:02:06,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:02:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:02:07,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:02:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:02:08,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:02:08,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538752701] [2023-12-22 00:02:08,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538752701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:02:08,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:02:08,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-22 00:02:08,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801568261] [2023-12-22 00:02:08,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:02:08,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-22 00:02:08,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:02:08,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-22 00:02:08,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-12-22 00:02:08,552 INFO L87 Difference]: Start difference. First operand 18071 states and 20763 transitions. Second operand has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:02:14,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:02:14,260 INFO L93 Difference]: Finished difference Result 21185 states and 24260 transitions. [2023-12-22 00:02:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-22 00:02:14,261 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 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 141 [2023-12-22 00:02:14,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:02:14,272 INFO L225 Difference]: With dead ends: 21185 [2023-12-22 00:02:14,272 INFO L226 Difference]: Without dead ends: 11338 [2023-12-22 00:02:14,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=884, Invalid=4816, Unknown=0, NotChecked=0, Total=5700 [2023-12-22 00:02:14,281 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 23712 mSDsluCounter, 14869 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23712 SdHoareTripleChecker+Valid, 16412 SdHoareTripleChecker+Invalid, 2207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:02:14,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23712 Valid, 16412 Invalid, 2207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-22 00:02:14,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11338 states. [2023-12-22 00:02:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11338 to 7509. [2023-12-22 00:02:14,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7509 states, 7507 states have (on average 1.1721060343679233) internal successors, (8799), 7508 states have internal predecessors, (8799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:02:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7509 states to 7509 states and 8799 transitions. [2023-12-22 00:02:14,797 INFO L78 Accepts]: Start accepts. Automaton has 7509 states and 8799 transitions. Word has length 141 [2023-12-22 00:02:14,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:02:14,797 INFO L495 AbstractCegarLoop]: Abstraction has 7509 states and 8799 transitions. [2023-12-22 00:02:14,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:02:14,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7509 states and 8799 transitions. [2023-12-22 00:02:14,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 00:02:14,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:02:14,799 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:02:14,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-22 00:02:14,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:02:15,000 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:02:15,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:02:15,000 INFO L85 PathProgramCache]: Analyzing trace with hash -221687871, now seen corresponding path program 1 times [2023-12-22 00:02:15,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:02:15,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232058455] [2023-12-22 00:02:15,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:02:15,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:02:15,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:02:15,001 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:02:15,002 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 (34)] Waiting until timeout for monitored process [2023-12-22 00:02:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:02:15,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-22 00:02:15,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:02:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 138 proven. 70 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-22 00:02:19,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:02:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 138 proven. 70 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-22 00:02:22,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:02:22,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232058455] [2023-12-22 00:02:22,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232058455] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:02:22,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:02:22,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 41 [2023-12-22 00:02:22,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242071546] [2023-12-22 00:02:22,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:02:22,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-22 00:02:22,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:02:22,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-22 00:02:22,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2023-12-22 00:02:22,032 INFO L87 Difference]: Start difference. First operand 7509 states and 8799 transitions. Second operand has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 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 00:03:24,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:03:24,169 INFO L93 Difference]: Finished difference Result 11994 states and 13618 transitions. [2023-12-22 00:03:24,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-12-22 00:03:24,171 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 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 142 [2023-12-22 00:03:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:03:24,178 INFO L225 Difference]: With dead ends: 11994 [2023-12-22 00:03:24,178 INFO L226 Difference]: Without dead ends: 8157 [2023-12-22 00:03:24,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11310 ImplicationChecksByTransitivity, 57.2s TimeCoverageRelationStatistics Valid=4356, Invalid=28586, Unknown=0, NotChecked=0, Total=32942 [2023-12-22 00:03:24,183 INFO L413 NwaCegarLoop]: 1584 mSDtfsCounter, 15289 mSDsluCounter, 22496 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15289 SdHoareTripleChecker+Valid, 24080 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-22 00:03:24,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15289 Valid, 24080 Invalid, 2957 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [168 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-22 00:03:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8157 states. [2023-12-22 00:03:24,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8157 to 6817. [2023-12-22 00:03:24,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6817 states, 6815 states have (on average 1.180777696258254) internal successors, (8047), 6816 states have internal predecessors, (8047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:03:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6817 states to 6817 states and 8047 transitions. [2023-12-22 00:03:24,617 INFO L78 Accepts]: Start accepts. Automaton has 6817 states and 8047 transitions. Word has length 142 [2023-12-22 00:03:24,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:03:24,617 INFO L495 AbstractCegarLoop]: Abstraction has 6817 states and 8047 transitions. [2023-12-22 00:03:24,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 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 00:03:24,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6817 states and 8047 transitions. [2023-12-22 00:03:24,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 00:03:24,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:03:24,618 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:03:24,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-22 00:03:24,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:03:24,819 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:03:24,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:03:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash 437099009, now seen corresponding path program 1 times [2023-12-22 00:03:24,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:03:24,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614937051] [2023-12-22 00:03:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:03:24,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:03:24,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:03:24,821 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:03:24,824 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 (35)] Waiting until timeout for monitored process [2023-12-22 00:03:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:03:24,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-22 00:03:24,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:03:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 142 proven. 52 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-22 00:03:27,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:03:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 66 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:03:29,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:03:29,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614937051] [2023-12-22 00:03:29,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614937051] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:03:29,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:03:29,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2023-12-22 00:03:29,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381108567] [2023-12-22 00:03:29,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:03:29,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-22 00:03:29,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:03:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-22 00:03:29,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1607, Unknown=0, NotChecked=0, Total=1806 [2023-12-22 00:03:29,881 INFO L87 Difference]: Start difference. First operand 6817 states and 8047 transitions. Second operand has 43 states, 43 states have (on average 5.534883720930233) internal successors, (238), 43 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:04:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:04:11,856 INFO L93 Difference]: Finished difference Result 9841 states and 11308 transitions. [2023-12-22 00:04:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2023-12-22 00:04:11,858 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.534883720930233) internal successors, (238), 43 states have internal predecessors, (238), 0 states have call successors, (0), 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 142 [2023-12-22 00:04:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:04:11,867 INFO L225 Difference]: With dead ends: 9841 [2023-12-22 00:04:11,868 INFO L226 Difference]: Without dead ends: 8853 [2023-12-22 00:04:11,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16376 ImplicationChecksByTransitivity, 37.2s TimeCoverageRelationStatistics Valid=4958, Invalid=41914, Unknown=0, NotChecked=0, Total=46872 [2023-12-22 00:04:11,874 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 31343 mSDsluCounter, 27379 mSDsCounter, 0 mSdLazyCounter, 2990 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31343 SdHoareTripleChecker+Valid, 28973 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-22 00:04:11,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31343 Valid, 28973 Invalid, 3179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [189 Valid, 2990 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-22 00:04:11,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8853 states. [2023-12-22 00:04:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8853 to 7272. [2023-12-22 00:04:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7272 states, 7270 states have (on average 1.174828060522696) internal successors, (8541), 7271 states have internal predecessors, (8541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:04:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7272 states to 7272 states and 8541 transitions. [2023-12-22 00:04:12,375 INFO L78 Accepts]: Start accepts. Automaton has 7272 states and 8541 transitions. Word has length 142 [2023-12-22 00:04:12,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:04:12,375 INFO L495 AbstractCegarLoop]: Abstraction has 7272 states and 8541 transitions. [2023-12-22 00:04:12,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.534883720930233) internal successors, (238), 43 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:04:12,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7272 states and 8541 transitions. [2023-12-22 00:04:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 00:04:12,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:04:12,377 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:04:12,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-22 00:04:12,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:04:12,578 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:04:12,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:04:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1566904443, now seen corresponding path program 1 times [2023-12-22 00:04:12,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:04:12,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869922651] [2023-12-22 00:04:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:04:12,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:04:12,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:04:12,580 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:04:12,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-22 00:04:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:04:12,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 00:04:12,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:04:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 142 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 00:04:14,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:04:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 139 proven. 70 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 00:04:15,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:04:15,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869922651] [2023-12-22 00:04:15,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869922651] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:04:15,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:04:15,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2023-12-22 00:04:15,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79367256] [2023-12-22 00:04:15,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:04:15,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-22 00:04:15,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:04:15,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-22 00:04:15,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-12-22 00:04:15,296 INFO L87 Difference]: Start difference. First operand 7272 states and 8541 transitions. Second operand has 24 states, 24 states have (on average 9.166666666666666) internal successors, (220), 24 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:04:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:04:18,129 INFO L93 Difference]: Finished difference Result 7610 states and 8913 transitions. [2023-12-22 00:04:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-22 00:04:18,130 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.166666666666666) internal successors, (220), 24 states have internal predecessors, (220), 0 states have call successors, (0), 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 142 [2023-12-22 00:04:18,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:04:18,136 INFO L225 Difference]: With dead ends: 7610 [2023-12-22 00:04:18,136 INFO L226 Difference]: Without dead ends: 5509 [2023-12-22 00:04:18,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2023-12-22 00:04:18,139 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 16132 mSDsluCounter, 6425 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16132 SdHoareTripleChecker+Valid, 7948 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:04:18,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16132 Valid, 7948 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 00:04:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5509 states. [2023-12-22 00:04:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5509 to 4777. [2023-12-22 00:04:18,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4777 states, 4775 states have (on average 1.215916230366492) internal successors, (5806), 4776 states have internal predecessors, (5806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:04:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 5806 transitions. [2023-12-22 00:04:18,401 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 5806 transitions. Word has length 142 [2023-12-22 00:04:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:04:18,402 INFO L495 AbstractCegarLoop]: Abstraction has 4777 states and 5806 transitions. [2023-12-22 00:04:18,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.166666666666666) internal successors, (220), 24 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:04:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 5806 transitions. [2023-12-22 00:04:18,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-22 00:04:18,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:04:18,404 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:04:18,408 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 00:04:18,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:04:18,604 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:04:18,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:04:18,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1853126369, now seen corresponding path program 1 times [2023-12-22 00:04:18,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:04:18,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104170527] [2023-12-22 00:04:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:04:18,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:04:18,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:04:18,606 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:04:18,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-22 00:04:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:04:18,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-22 00:04:18,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:04:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 138 proven. 71 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-22 00:04:21,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:04:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 32 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:04:25,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:04:25,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104170527] [2023-12-22 00:04:25,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104170527] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:04:25,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:04:25,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 44 [2023-12-22 00:04:25,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460263610] [2023-12-22 00:04:25,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:04:25,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-22 00:04:25,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:04:25,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-22 00:04:25,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1694, Unknown=0, NotChecked=0, Total=1892 [2023-12-22 00:04:25,116 INFO L87 Difference]: Start difference. First operand 4777 states and 5806 transitions. Second operand has 44 states, 44 states have (on average 5.909090909090909) internal successors, (260), 44 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:04:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:04:52,747 INFO L93 Difference]: Finished difference Result 5412 states and 6470 transitions. [2023-12-22 00:04:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-12-22 00:04:52,748 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.909090909090909) internal successors, (260), 44 states have internal predecessors, (260), 0 states have call successors, (0), 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 142 [2023-12-22 00:04:52,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:04:52,753 INFO L225 Difference]: With dead ends: 5412 [2023-12-22 00:04:52,753 INFO L226 Difference]: Without dead ends: 3537 [2023-12-22 00:04:52,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6817 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=2606, Invalid=19744, Unknown=0, NotChecked=0, Total=22350 [2023-12-22 00:04:52,759 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 25562 mSDsluCounter, 16520 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25562 SdHoareTripleChecker+Valid, 18080 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-22 00:04:52,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25562 Valid, 18080 Invalid, 2425 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-22 00:04:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2023-12-22 00:04:52,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 2932. [2023-12-22 00:04:52,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2930 states have (on average 1.3051194539249147) internal successors, (3824), 2931 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:04:52,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 3824 transitions. [2023-12-22 00:04:52,855 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 3824 transitions. Word has length 142 [2023-12-22 00:04:52,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:04:52,855 INFO L495 AbstractCegarLoop]: Abstraction has 2932 states and 3824 transitions. [2023-12-22 00:04:52,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.909090909090909) internal successors, (260), 44 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:04:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 3824 transitions. [2023-12-22 00:04:52,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-22 00:04:52,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:04:52,856 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:04:52,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-22 00:04:53,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:04:53,057 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:04:53,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:04:53,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1472347224, now seen corresponding path program 2 times [2023-12-22 00:04:53,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:04:53,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80914125] [2023-12-22 00:04:53,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 00:04:53,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:04:53,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:04:53,059 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:04:53,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-22 00:04:53,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 00:04:53,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 00:04:53,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-22 00:04:53,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:04:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 56 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:04:56,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:05:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 32 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:05:01,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:05:01,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80914125] [2023-12-22 00:05:01,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80914125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:05:01,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:05:01,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 48 [2023-12-22 00:05:01,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34176103] [2023-12-22 00:05:01,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:05:01,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-22 00:05:01,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:05:01,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-22 00:05:01,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1961, Unknown=0, NotChecked=0, Total=2256 [2023-12-22 00:05:01,579 INFO L87 Difference]: Start difference. First operand 2932 states and 3824 transitions. Second operand has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:18,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:05:18,704 INFO L93 Difference]: Finished difference Result 3469 states and 4396 transitions. [2023-12-22 00:05:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-22 00:05:18,706 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 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 143 [2023-12-22 00:05:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:05:18,709 INFO L225 Difference]: With dead ends: 3469 [2023-12-22 00:05:18,709 INFO L226 Difference]: Without dead ends: 3049 [2023-12-22 00:05:18,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2716 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=2162, Invalid=9610, Unknown=0, NotChecked=0, Total=11772 [2023-12-22 00:05:18,711 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 24003 mSDsluCounter, 19963 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24003 SdHoareTripleChecker+Valid, 21471 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:05:18,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24003 Valid, 21471 Invalid, 1727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-22 00:05:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2023-12-22 00:05:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2737. [2023-12-22 00:05:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 2735 states have (on average 1.3210237659963437) internal successors, (3613), 2736 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:18,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 3613 transitions. [2023-12-22 00:05:18,788 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 3613 transitions. Word has length 143 [2023-12-22 00:05:18,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:05:18,788 INFO L495 AbstractCegarLoop]: Abstraction has 2737 states and 3613 transitions. [2023-12-22 00:05:18,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 3613 transitions. [2023-12-22 00:05:18,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-22 00:05:18,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:05:18,789 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2023-12-22 00:05:18,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-22 00:05:18,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:18,990 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:05:18,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:05:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2023328705, now seen corresponding path program 1 times [2023-12-22 00:05:18,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:05:18,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31617287] [2023-12-22 00:05:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:05:18,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:18,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:05:18,992 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:05:18,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-22 00:05:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:05:19,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 00:05:19,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:05:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 153 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-22 00:05:20,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:05:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 148 proven. 47 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-22 00:05:21,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:05:21,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31617287] [2023-12-22 00:05:21,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31617287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:05:21,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:05:21,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 25 [2023-12-22 00:05:21,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973895987] [2023-12-22 00:05:21,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:05:21,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-22 00:05:21,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:05:21,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-22 00:05:21,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-12-22 00:05:21,595 INFO L87 Difference]: Start difference. First operand 2737 states and 3613 transitions. Second operand has 25 states, 25 states have (on average 8.08) internal successors, (202), 25 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:05:22,969 INFO L93 Difference]: Finished difference Result 2741 states and 3615 transitions. [2023-12-22 00:05:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-22 00:05:22,970 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.08) internal successors, (202), 25 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-22 00:05:22,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:05:22,972 INFO L225 Difference]: With dead ends: 2741 [2023-12-22 00:05:22,972 INFO L226 Difference]: Without dead ends: 2591 [2023-12-22 00:05:22,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=352, Invalid=1130, Unknown=0, NotChecked=0, Total=1482 [2023-12-22 00:05:22,973 INFO L413 NwaCegarLoop]: 1489 mSDtfsCounter, 14593 mSDsluCounter, 11848 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14593 SdHoareTripleChecker+Valid, 13337 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 00:05:22,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14593 Valid, 13337 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 00:05:22,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2023-12-22 00:05:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2589. [2023-12-22 00:05:23,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2587 states have (on average 1.333977580208736) internal successors, (3451), 2588 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3451 transitions. [2023-12-22 00:05:23,027 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3451 transitions. Word has length 144 [2023-12-22 00:05:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:05:23,028 INFO L495 AbstractCegarLoop]: Abstraction has 2589 states and 3451 transitions. [2023-12-22 00:05:23,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.08) internal successors, (202), 25 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:23,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3451 transitions. [2023-12-22 00:05:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-22 00:05:23,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:05:23,029 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:05:23,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-22 00:05:23,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:23,229 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:05:23,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:05:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash -713093822, now seen corresponding path program 1 times [2023-12-22 00:05:23,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:05:23,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191080206] [2023-12-22 00:05:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:05:23,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:23,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:05:23,231 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:05:23,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-22 00:05:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:05:23,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-22 00:05:23,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:05:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-22 00:05:26,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:05:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-22 00:05:29,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:05:29,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191080206] [2023-12-22 00:05:29,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191080206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 00:05:29,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 00:05:29,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2023-12-22 00:05:29,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228157499] [2023-12-22 00:05:29,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 00:05:29,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-22 00:05:29,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:05:29,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-22 00:05:29,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2023-12-22 00:05:29,336 INFO L87 Difference]: Start difference. First operand 2589 states and 3451 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:05:34,151 INFO L93 Difference]: Finished difference Result 2589 states and 3451 transitions. [2023-12-22 00:05:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-22 00:05:34,153 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 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 147 [2023-12-22 00:05:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:05:34,155 INFO L225 Difference]: With dead ends: 2589 [2023-12-22 00:05:34,155 INFO L226 Difference]: Without dead ends: 2257 [2023-12-22 00:05:34,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=482, Invalid=1968, Unknown=0, NotChecked=0, Total=2450 [2023-12-22 00:05:34,157 INFO L413 NwaCegarLoop]: 1460 mSDtfsCounter, 7403 mSDsluCounter, 20371 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7403 SdHoareTripleChecker+Valid, 21831 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:05:34,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7403 Valid, 21831 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-22 00:05:34,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2023-12-22 00:05:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2023-12-22 00:05:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.377659574468085) internal successors, (3108), 2256 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3108 transitions. [2023-12-22 00:05:34,186 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3108 transitions. Word has length 147 [2023-12-22 00:05:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:05:34,186 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3108 transitions. [2023-12-22 00:05:34,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:05:34,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3108 transitions. [2023-12-22 00:05:34,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-22 00:05:34,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:05:34,187 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, 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, 1] [2023-12-22 00:05:34,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-22 00:05:34,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:34,388 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:05:34,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:05:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2144445901, now seen corresponding path program 1 times [2023-12-22 00:05:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:05:34,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637266726] [2023-12-22 00:05:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:05:34,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:05:34,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:05:34,391 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:05:34,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-22 00:05:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:05:34,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 00:05:34,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:05:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:05:35,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:05:35,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:05:35,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637266726] [2023-12-22 00:05:35,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637266726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:05:35,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:05:35,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 00:05:35,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158742872] [2023-12-22 00:05:35,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:05:35,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:05:35,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:05:35,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:05:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:05:35,774 INFO L87 Difference]: Start difference. First operand 2257 states and 3108 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:06:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:06:07,284 INFO L93 Difference]: Finished difference Result 3761 states and 5452 transitions. [2023-12-22 00:06:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:06:07,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2023-12-22 00:06:07,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:06:07,288 INFO L225 Difference]: With dead ends: 3761 [2023-12-22 00:06:07,288 INFO L226 Difference]: Without dead ends: 2257 [2023-12-22 00:06:07,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:06:07,290 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 609 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2023-12-22 00:06:07,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 698 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 31.4s Time] [2023-12-22 00:06:07,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2023-12-22 00:06:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2023-12-22 00:06:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.375) internal successors, (3102), 2256 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:06:07,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3102 transitions. [2023-12-22 00:06:07,319 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3102 transitions. Word has length 203 [2023-12-22 00:06:07,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:06:07,319 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3102 transitions. [2023-12-22 00:06:07,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:06:07,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3102 transitions. [2023-12-22 00:06:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-22 00:06:07,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:06:07,320 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:06:07,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-22 00:06:07,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:06:07,522 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:06:07,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:06:07,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1330010361, now seen corresponding path program 1 times [2023-12-22 00:06:07,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:06:07,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94619450] [2023-12-22 00:06:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:06:07,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:06:07,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:06:07,524 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 00:06:07,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-22 00:06:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:06:07,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 00:06:07,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:06:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:06:08,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:06:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:06:08,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:06:08,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94619450] [2023-12-22 00:06:08,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94619450] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 00:06:08,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 00:06:08,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 00:06:08,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424200731] [2023-12-22 00:06:08,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:06:08,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:06:08,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:06:08,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:06:08,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 00:06:08,586 INFO L87 Difference]: Start difference. First operand 2257 states and 3102 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:06:42,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 00:07:53,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 00:08:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:08:29,136 INFO L93 Difference]: Finished difference Result 5263 states and 7789 transitions. [2023-12-22 00:08:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:08:29,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2023-12-22 00:08:29,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:08:29,141 INFO L225 Difference]: With dead ends: 5263 [2023-12-22 00:08:29,142 INFO L226 Difference]: Without dead ends: 3759 [2023-12-22 00:08:29,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 00:08:29,144 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 761 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.3s IncrementalHoareTripleChecker+Time [2023-12-22 00:08:29,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 865 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 140.3s Time] [2023-12-22 00:08:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2023-12-22 00:08:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2023-12-22 00:08:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.415380521554018) internal successors, (5319), 3758 states have internal predecessors, (5319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:08:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5319 transitions. [2023-12-22 00:08:29,202 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5319 transitions. Word has length 271 [2023-12-22 00:08:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:08:29,203 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 5319 transitions. [2023-12-22 00:08:29,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:08:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5319 transitions. [2023-12-22 00:08:29,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-22 00:08:29,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:08:29,205 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:08:29,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-22 00:08:29,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:08:29,415 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:08:29,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:08:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1567870575, now seen corresponding path program 1 times [2023-12-22 00:08:29,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:08:29,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008346077] [2023-12-22 00:08:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:08:29,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:08:29,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:08:29,418 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 00:08:29,419 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 (43)] Waiting until timeout for monitored process [2023-12-22 00:08:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:08:29,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:08:29,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:08:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:08:29,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:08:29,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:08:29,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008346077] [2023-12-22 00:08:29,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008346077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:08:29,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:08:29,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:08:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365079610] [2023-12-22 00:08:29,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:08:29,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:08:29,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:08:29,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:08:29,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:08:29,658 INFO L87 Difference]: Start difference. First operand 3759 states and 5319 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:09:09,968 INFO L93 Difference]: Finished difference Result 9769 states and 14440 transitions. [2023-12-22 00:09:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:09:09,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 272 [2023-12-22 00:09:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:09:09,976 INFO L225 Difference]: With dead ends: 9769 [2023-12-22 00:09:09,976 INFO L226 Difference]: Without dead ends: 6763 [2023-12-22 00:09:09,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:09:09,978 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 694 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:09:09,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 982 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 40.1s Time] [2023-12-22 00:09:09,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2023-12-22 00:09:10,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2023-12-22 00:09:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.3905649216208222) internal successors, (9403), 6762 states have internal predecessors, (9403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9403 transitions. [2023-12-22 00:09:10,065 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9403 transitions. Word has length 272 [2023-12-22 00:09:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:09:10,065 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 9403 transitions. [2023-12-22 00:09:10,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:10,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9403 transitions. [2023-12-22 00:09:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-22 00:09:10,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:09:10,067 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:09:10,072 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 00:09:10,268 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 00:09:10,268 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:09:10,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:09:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash 581416313, now seen corresponding path program 1 times [2023-12-22 00:09:10,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:09:10,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115220934] [2023-12-22 00:09:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:09:10,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:09:10,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:09:10,271 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 00:09:10,272 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 00:09:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:09:10,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 00:09:10,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:09:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:09:10,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 00:09:10,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:09:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115220934] [2023-12-22 00:09:10,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115220934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 00:09:10,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 00:09:10,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 00:09:10,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351313347] [2023-12-22 00:09:10,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:09:10,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:09:10,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:09:10,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:09:10,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:09:10,510 INFO L87 Difference]: Start difference. First operand 6763 states and 9403 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:55,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 00:09:55,206 INFO L93 Difference]: Finished difference Result 15777 states and 22608 transitions. [2023-12-22 00:09:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:09:55,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2023-12-22 00:09:55,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 00:09:55,216 INFO L225 Difference]: With dead ends: 15777 [2023-12-22 00:09:55,216 INFO L226 Difference]: Without dead ends: 9767 [2023-12-22 00:09:55,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 00:09:55,222 INFO L413 NwaCegarLoop]: 1413 mSDtfsCounter, 691 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.4s IncrementalHoareTripleChecker+Time [2023-12-22 00:09:55,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1420 Invalid, 3084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 44.4s Time] [2023-12-22 00:09:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2023-12-22 00:09:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2023-12-22 00:09:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3806061847225066) internal successors, (13483), 9766 states have internal predecessors, (13483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:55,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13483 transitions. [2023-12-22 00:09:55,334 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13483 transitions. Word has length 276 [2023-12-22 00:09:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 00:09:55,334 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 13483 transitions. [2023-12-22 00:09:55,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 00:09:55,334 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13483 transitions. [2023-12-22 00:09:55,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-22 00:09:55,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 00:09:55,336 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 00:09:55,341 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 00:09:55,536 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 00:09:55,537 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 00:09:55,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 00:09:55,537 INFO L85 PathProgramCache]: Analyzing trace with hash -56136947, now seen corresponding path program 1 times [2023-12-22 00:09:55,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 00:09:55,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323235311] [2023-12-22 00:09:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 00:09:55,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 00:09:55,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 00:09:55,540 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 00:09:55,540 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 00:09:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 00:09:55,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 00:09:55,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 00:09:55,980 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 113 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:09:55,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 00:09:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 00:09:56,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 00:09:56,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323235311] [2023-12-22 00:09:56,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323235311] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 00:09:56,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 00:09:56,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 00:09:56,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976893151] [2023-12-22 00:09:56,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 00:09:56,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 00:09:56,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 00:09:56,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 00:09:56,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 00:09:56,333 INFO L87 Difference]: Start difference. First operand 9767 states and 13483 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-22 00:09:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 00:09:57,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 00:09:57,485 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 147 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 00:09:57,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 8 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 00:09:57,486 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-22 00:09:57,491 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 00:09:57,493 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 (45)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 00:09:57,531 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 00:09:57,687 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 00:09:57,688 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (9767states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (449 states constructed, input type IntersectNwa). [2023-12-22 00:09:57,689 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-22 00:09:57,692 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-12-22 00:09:57,694 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 00:09:57,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:09:57 BoogieIcfgContainer [2023-12-22 00:09:57,696 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 00:09:57,696 INFO L158 Benchmark]: Toolchain (without parser) took 849730.90ms. Allocated memory was 262.1MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 196.7MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-22 00:09:57,696 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 183.5MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 00:09:57,696 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1732.29ms. Allocated memory is still 262.1MB. Free memory was 196.7MB in the beginning and 124.9MB in the end (delta: 71.8MB). Peak memory consumption was 137.9MB. Max. memory is 8.0GB. [2023-12-22 00:09:57,696 INFO L158 Benchmark]: Boogie Procedure Inliner took 194.06ms. Allocated memory is still 262.1MB. Free memory was 124.9MB in the beginning and 89.8MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-22 00:09:57,697 INFO L158 Benchmark]: Boogie Preprocessor took 437.69ms. Allocated memory was 262.1MB in the beginning and 364.9MB in the end (delta: 102.8MB). Free memory was 89.8MB in the beginning and 278.2MB in the end (delta: -188.4MB). Peak memory consumption was 33.9MB. Max. memory is 8.0GB. [2023-12-22 00:09:57,697 INFO L158 Benchmark]: RCFGBuilder took 23260.11ms. Allocated memory is still 364.9MB. Free memory was 278.2MB in the beginning and 234.7MB in the end (delta: 43.5MB). Peak memory consumption was 156.7MB. Max. memory is 8.0GB. [2023-12-22 00:09:57,697 INFO L158 Benchmark]: TraceAbstraction took 824101.62ms. Allocated memory was 364.9MB in the beginning and 2.6GB in the end (delta: 2.2GB). Free memory was 234.2MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-22 00:09:57,700 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 183.5MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1732.29ms. Allocated memory is still 262.1MB. Free memory was 196.7MB in the beginning and 124.9MB in the end (delta: 71.8MB). Peak memory consumption was 137.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 194.06ms. Allocated memory is still 262.1MB. Free memory was 124.9MB in the beginning and 89.8MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 437.69ms. Allocated memory was 262.1MB in the beginning and 364.9MB in the end (delta: 102.8MB). Free memory was 89.8MB in the beginning and 278.2MB in the end (delta: -188.4MB). Peak memory consumption was 33.9MB. Max. memory is 8.0GB. * RCFGBuilder took 23260.11ms. Allocated memory is still 364.9MB. Free memory was 278.2MB in the beginning and 234.7MB in the end (delta: 43.5MB). Peak memory consumption was 156.7MB. Max. memory is 8.0GB. * TraceAbstraction took 824101.62ms. Allocated memory was 364.9MB in the beginning and 2.6GB in the end (delta: 2.2GB). Free memory was 234.2MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 1.0GB. 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: 490]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 490). Cancelled while NwaCegarLoop was constructing difference of abstraction (9767states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (449 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 295]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 295). Cancelled while NwaCegarLoop was constructing difference of abstraction (9767states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (449 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 809 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 824.0s, OverallIterations: 44, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 725.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 357929 SdHoareTripleChecker+Valid, 380.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 357929 mSDsluCounter, 424246 SdHoareTripleChecker+Invalid, 339.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 361930 mSDsCounter, 4019 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50084 IncrementalHoareTripleChecker+Invalid, 54103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4019 mSolverCounterUnsat, 62316 mSDtfsCounter, 50084 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9759 GetRequests, 7503 SyntacticMatches, 1 SemanticMatches, 2255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134000 ImplicationChecksByTransitivity, 360.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26782occurred in iteration=30, InterpolantAutomatonStates: 1806, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.2s AutomataMinimizationTime, 43 MinimizatonAttempts, 21811 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 76.1s InterpolantComputationTime, 4985 NumberOfCodeBlocks, 4709 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 8147 ConstructedInterpolants, 1449 QuantifiedInterpolants, 96288 SizeOfPredicates, 208 NumberOfNonLiveVariables, 9372 ConjunctsInSsa, 466 ConjunctsInUnsatCore, 69 InterpolantComputations, 21 PerfectInterpolantSequences, 5350/9363 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