/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/loop-acceleration/array_3-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:26:28,629 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:26:28,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:26:28,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:26:28,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:26:28,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:26:28,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:26:28,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:26:28,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:26:28,720 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:26:28,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:26:28,721 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:26:28,721 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:26:28,722 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:26:28,722 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:26:28,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:26:28,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:26:28,723 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:26:28,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:26:28,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:26:28,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:26:28,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:26:28,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:26:28,725 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:26:28,725 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:26:28,725 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:26:28,725 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:26:28,725 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:26:28,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:26:28,726 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:26:28,726 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:26:28,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:26:28,727 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:26:28,727 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:26:28,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:26:28,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:26:28,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:26:28,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:26:28,727 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:26:28,728 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:26:28,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:26:28,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:26:28,728 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:26:28,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:26:28,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:26:28,728 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:26:28,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:26:28,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:26:28,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:26:28,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:26:28,888 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:26:28,888 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:26:28,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_3-2.i [2023-12-16 16:26:29,908 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:26:30,054 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:26:30,054 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-2.i [2023-12-16 16:26:30,059 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b474cb2/f1db2ba15e124c2c818d603d84e3cd8a/FLAG4495f67a5 [2023-12-16 16:26:30,068 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4b474cb2/f1db2ba15e124c2c818d603d84e3cd8a [2023-12-16 16:26:30,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:26:30,073 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:26:30,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:26:30,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:26:30,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:26:30,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fe4c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30, skipping insertion in model container [2023-12-16 16:26:30,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,097 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:26:30,206 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-2.i[809,822] [2023-12-16 16:26:30,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:26:30,226 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:26:30,237 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-2.i[809,822] [2023-12-16 16:26:30,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:26:30,259 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:26:30,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30 WrapperNode [2023-12-16 16:26:30,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:26:30,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:26:30,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:26:30,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:26:30,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,285 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2023-12-16 16:26:30,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:26:30,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:26:30,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:26:30,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:26:30,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,294 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,302 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-16 16:26:30,302 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,307 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,309 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,309 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:26:30,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:26:30,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:26:30,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:26:30,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (1/1) ... [2023-12-16 16:26:30,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:26:30,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:26:30,349 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) [2023-12-16 16:26:30,366 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 [2023-12-16 16:26:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:26:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:26:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 16:26:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 16:26:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 16:26:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 16:26:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:26:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:26:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 16:26:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 16:26:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 16:26:30,442 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:26:30,443 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:26:30,534 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:26:30,556 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:26:30,556 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 16:26:30,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:26:30 BoogieIcfgContainer [2023-12-16 16:26:30,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:26:30,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:26:30,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:26:30,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:26:30,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:26:30" (1/3) ... [2023-12-16 16:26:30,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c82808e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:26:30, skipping insertion in model container [2023-12-16 16:26:30,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:26:30" (2/3) ... [2023-12-16 16:26:30,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c82808e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:26:30, skipping insertion in model container [2023-12-16 16:26:30,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:26:30" (3/3) ... [2023-12-16 16:26:30,563 INFO L112 eAbstractionObserver]: Analyzing ICFG array_3-2.i [2023-12-16 16:26:30,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:26:30,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:26:30,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:26:30,625 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;@7558b120, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:26:30,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:26:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 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) [2023-12-16 16:26:30,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-16 16:26:30,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:26:30,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:26:30,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:26:30,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:26:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1780754240, now seen corresponding path program 1 times [2023-12-16 16:26:30,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:26:30,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738613089] [2023-12-16 16:26:30,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:26:30,650 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 [2023-12-16 16:26:30,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:26:30,664 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) [2023-12-16 16:26:30,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 16:26:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:26:30,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 16:26:30,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:26:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:26:30,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:26:30,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:26:30,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738613089] [2023-12-16 16:26:30,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738613089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:26:30,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:26:30,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:26:30,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887713186] [2023-12-16 16:26:30,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:26:30,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 16:26:30,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:26:30,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 16:26:30,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:26:30,767 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:26:30,795 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2023-12-16 16:26:30,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 16:26:30,797 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-12-16 16:26:30,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:26:30,802 INFO L225 Difference]: With dead ends: 22 [2023-12-16 16:26:30,802 INFO L226 Difference]: Without dead ends: 10 [2023-12-16 16:26:30,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:26:30,807 INFO L413 NwaCegarLoop]: 10 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, 10 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 [2023-12-16 16:26:30,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:26:30,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-16 16:26:30,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-16 16:26:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-12-16 16:26:30,828 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2023-12-16 16:26:30,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:26:30,828 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-12-16 16:26:30,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:30,829 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-16 16:26:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 16:26:30,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:26:30,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:26:30,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 16:26:31,032 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 [2023-12-16 16:26:31,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:26:31,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:26:31,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1465143049, now seen corresponding path program 1 times [2023-12-16 16:26:31,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:26:31,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815617415] [2023-12-16 16:26:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:26:31,034 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 [2023-12-16 16:26:31,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:26:31,035 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) [2023-12-16 16:26:31,049 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 [2023-12-16 16:26:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:26:31,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 16:26:31,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:26:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:26:31,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:26:31,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:26:31,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815617415] [2023-12-16 16:26:31,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815617415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:26:31,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:26:31,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:26:31,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915190924] [2023-12-16 16:26:31,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:26:31,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:26:31,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:26:31,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:26:31,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:26:31,103 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:31,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:26:31,128 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2023-12-16 16:26:31,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:26:31,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-12-16 16:26:31,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:26:31,129 INFO L225 Difference]: With dead ends: 26 [2023-12-16 16:26:31,129 INFO L226 Difference]: Without dead ends: 18 [2023-12-16 16:26:31,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:26:31,130 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:26:31,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:26:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-16 16:26:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2023-12-16 16:26:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-16 16:26:31,134 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2023-12-16 16:26:31,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:26:31,134 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-16 16:26:31,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-16 16:26:31,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 16:26:31,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:26:31,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:26:31,141 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 [2023-12-16 16:26:31,336 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 [2023-12-16 16:26:31,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:26:31,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:26:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash -153121515, now seen corresponding path program 1 times [2023-12-16 16:26:31,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:26:31,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59102038] [2023-12-16 16:26:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:26:31,338 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 [2023-12-16 16:26:31,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:26:31,339 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) [2023-12-16 16:26:31,356 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 [2023-12-16 16:26:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:26:31,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 16:26:31,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:26:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:26:31,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:26:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:26:31,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:26:31,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59102038] [2023-12-16 16:26:31,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59102038] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:26:31,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:26:31,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-16 16:26:31,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823709696] [2023-12-16 16:26:31,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:26:31,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:26:31,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:26:31,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:26:31,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:26:31,431 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:26:31,513 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2023-12-16 16:26:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:26:31,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 10 [2023-12-16 16:26:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:26:31,514 INFO L225 Difference]: With dead ends: 50 [2023-12-16 16:26:31,515 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 16:26:31,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:26:31,515 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 49 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:26:31,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 26 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:26:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 16:26:31,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 14. [2023-12-16 16:26:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:31,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-12-16 16:26:31,519 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2023-12-16 16:26:31,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:26:31,520 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-12-16 16:26:31,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:31,520 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-12-16 16:26:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 16:26:31,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:26:31,520 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:26:31,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 16:26:31,721 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 [2023-12-16 16:26:31,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:26:31,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:26:31,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2134471177, now seen corresponding path program 2 times [2023-12-16 16:26:31,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:26:31,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533665069] [2023-12-16 16:26:31,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:26:31,722 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 [2023-12-16 16:26:31,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:26:31,723 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) [2023-12-16 16:26:31,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 16:26:31,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 16:26:31,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:26:31,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:26:31,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:26:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 16:26:31,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:26:31,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:26:31,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533665069] [2023-12-16 16:26:31,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533665069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:26:31,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:26:31,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 16:26:31,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401228956] [2023-12-16 16:26:31,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:26:31,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 16:26:31,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:26:31,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 16:26:31,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 16:26:31,785 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:26:31,828 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-12-16 16:26:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 16:26:31,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 13 [2023-12-16 16:26:31,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:26:31,830 INFO L225 Difference]: With dead ends: 21 [2023-12-16 16:26:31,830 INFO L226 Difference]: Without dead ends: 17 [2023-12-16 16:26:31,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:26:31,834 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:26:31,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:26:31,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-16 16:26:31,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-16 16:26:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-12-16 16:26:31,849 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2023-12-16 16:26:31,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:26:31,849 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-12-16 16:26:31,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-12-16 16:26:31,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 16:26:31,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:26:31,850 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:26:31,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 16:26:32,055 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 [2023-12-16 16:26:32,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:26:32,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:26:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2137530085, now seen corresponding path program 1 times [2023-12-16 16:26:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:26:32,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620546806] [2023-12-16 16:26:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:26:32,057 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 [2023-12-16 16:26:32,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:26:32,058 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) [2023-12-16 16:26:32,058 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 [2023-12-16 16:26:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:26:32,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:26:32,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:26:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 16:26:32,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:26:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 16:26:32,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:26:32,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620546806] [2023-12-16 16:26:32,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620546806] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:26:32,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:26:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 16:26:32,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477327922] [2023-12-16 16:26:32,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:26:32,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 16:26:32,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:26:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 16:26:32,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:26:32,262 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:26:32,538 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2023-12-16 16:26:32,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 16:26:32,538 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 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 16 [2023-12-16 16:26:32,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:26:32,539 INFO L225 Difference]: With dead ends: 97 [2023-12-16 16:26:32,539 INFO L226 Difference]: Without dead ends: 86 [2023-12-16 16:26:32,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 16:26:32,540 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 249 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 16:26:32,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 107 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 16:26:32,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-16 16:26:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 23. [2023-12-16 16:26:32,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-12-16 16:26:32,544 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2023-12-16 16:26:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:26:32,544 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-12-16 16:26:32,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-12-16 16:26:32,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 16:26:32,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:26:32,545 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:26:32,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 16:26:32,745 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 [2023-12-16 16:26:32,745 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:26:32,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:26:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 599648869, now seen corresponding path program 2 times [2023-12-16 16:26:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:26:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684769907] [2023-12-16 16:26:32,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:26:32,746 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 [2023-12-16 16:26:32,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:26:32,747 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) [2023-12-16 16:26:32,758 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 [2023-12-16 16:26:32,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:26:32,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:26:32,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 16:26:32,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:26:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 16:26:32,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:26:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 16:26:33,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:26:33,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684769907] [2023-12-16 16:26:33,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684769907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:26:33,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:26:33,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-16 16:26:33,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637150777] [2023-12-16 16:26:33,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:26:33,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 16:26:33,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:26:33,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 16:26:33,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 16:26:33,161 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 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) [2023-12-16 16:26:34,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:26:34,224 INFO L93 Difference]: Finished difference Result 193 states and 231 transitions. [2023-12-16 16:26:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 16:26:34,224 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 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 22 [2023-12-16 16:26:34,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:26:34,225 INFO L225 Difference]: With dead ends: 193 [2023-12-16 16:26:34,225 INFO L226 Difference]: Without dead ends: 182 [2023-12-16 16:26:34,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 16:26:34,226 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1090 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 16:26:34,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 497 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 16:26:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-16 16:26:34,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 35. [2023-12-16 16:26:34,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 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) [2023-12-16 16:26:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-12-16 16:26:34,232 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 22 [2023-12-16 16:26:34,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:26:34,232 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-12-16 16:26:34,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 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) [2023-12-16 16:26:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-12-16 16:26:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 16:26:34,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:26:34,233 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:26:34,249 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 [2023-12-16 16:26:34,433 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 [2023-12-16 16:26:34,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:26:34,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:26:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1827512677, now seen corresponding path program 3 times [2023-12-16 16:26:34,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:26:34,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345812455] [2023-12-16 16:26:34,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:26:34,435 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 [2023-12-16 16:26:34,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:26:34,435 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) [2023-12-16 16:26:34,436 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 [2023-12-16 16:26:34,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 16:26:34,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:26:34,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 16:26:34,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:26:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-16 16:26:34,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:26:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-16 16:26:34,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:26:34,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345812455] [2023-12-16 16:26:34,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345812455] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:26:34,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:26:34,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-12-16 16:26:34,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681908143] [2023-12-16 16:26:34,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:26:34,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 16:26:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:26:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 16:26:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-16 16:26:34,599 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:34,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:26:34,713 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2023-12-16 16:26:34,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 16:26:34,714 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2023-12-16 16:26:34,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:26:34,714 INFO L225 Difference]: With dead ends: 58 [2023-12-16 16:26:34,714 INFO L226 Difference]: Without dead ends: 45 [2023-12-16 16:26:34,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-12-16 16:26:34,715 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:26:34,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:26:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-16 16:26:34,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2023-12-16 16:26:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:34,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-12-16 16:26:34,720 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 34 [2023-12-16 16:26:34,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:26:34,720 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-12-16 16:26:34,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:34,721 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-12-16 16:26:34,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 16:26:34,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:26:34,721 INFO L195 NwaCegarLoop]: trace histogram [22, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:26:34,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 16:26:34,923 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 [2023-12-16 16:26:34,924 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:26:34,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:26:34,924 INFO L85 PathProgramCache]: Analyzing trace with hash 89908361, now seen corresponding path program 4 times [2023-12-16 16:26:34,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:26:34,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496644174] [2023-12-16 16:26:34,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 16:26:34,925 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 [2023-12-16 16:26:34,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:26:34,926 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) [2023-12-16 16:26:34,928 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 [2023-12-16 16:26:35,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 16:26:35,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:26:35,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 16:26:35,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:26:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 16:26:35,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:26:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 16:26:36,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:26:36,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496644174] [2023-12-16 16:26:36,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496644174] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:26:36,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:26:36,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-16 16:26:36,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978115195] [2023-12-16 16:26:36,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:26:36,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 16:26:36,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:26:36,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 16:26:36,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 16:26:36,272 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:41,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:26:41,634 INFO L93 Difference]: Finished difference Result 382 states and 457 transitions. [2023-12-16 16:26:41,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-16 16:26:41,634 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-16 16:26:41,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:26:41,636 INFO L225 Difference]: With dead ends: 382 [2023-12-16 16:26:41,636 INFO L226 Difference]: Without dead ends: 362 [2023-12-16 16:26:41,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 16:26:41,638 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 3785 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 2739 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3785 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 16:26:41,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3785 Valid, 1911 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 2739 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 16:26:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-16 16:26:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 68. [2023-12-16 16:26:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 67 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2023-12-16 16:26:41,654 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 43 [2023-12-16 16:26:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:26:41,655 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2023-12-16 16:26:41,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2023-12-16 16:26:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 16:26:41,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:26:41,656 INFO L195 NwaCegarLoop]: trace histogram [46, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:26:41,660 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 [2023-12-16 16:26:41,860 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 [2023-12-16 16:26:41,860 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:26:41,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:26:41,861 INFO L85 PathProgramCache]: Analyzing trace with hash -975718775, now seen corresponding path program 5 times [2023-12-16 16:26:41,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:26:41,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576604727] [2023-12-16 16:26:41,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 16:26:41,861 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 [2023-12-16 16:26:41,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:26:41,862 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) [2023-12-16 16:26:41,869 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 [2023-12-16 16:26:42,473 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-16 16:26:42,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:26:42,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 16:26:42,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:26:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-16 16:26:42,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:26:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-16 16:26:42,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:26:42,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576604727] [2023-12-16 16:26:42,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576604727] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:26:42,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:26:42,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-16 16:26:42,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568164888] [2023-12-16 16:26:42,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:26:42,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 16:26:42,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:26:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 16:26:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:26:42,662 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:42,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:26:42,969 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2023-12-16 16:26:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 16:26:42,969 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-16 16:26:42,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:26:42,969 INFO L225 Difference]: With dead ends: 100 [2023-12-16 16:26:42,970 INFO L226 Difference]: Without dead ends: 86 [2023-12-16 16:26:42,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2023-12-16 16:26:42,970 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 56 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:26:42,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 68 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:26:42,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-16 16:26:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-12-16 16:26:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 85 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2023-12-16 16:26:42,976 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 67 [2023-12-16 16:26:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:26:42,976 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2023-12-16 16:26:42,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2023-12-16 16:26:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-16 16:26:42,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:26:42,977 INFO L195 NwaCegarLoop]: trace histogram [46, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:26:42,992 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 [2023-12-16 16:26:43,187 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 [2023-12-16 16:26:43,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:26:43,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:26:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash 872513033, now seen corresponding path program 6 times [2023-12-16 16:26:43,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:26:43,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042093861] [2023-12-16 16:26:43,188 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 16:26:43,189 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 [2023-12-16 16:26:43,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:26:43,189 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) [2023-12-16 16:26:43,195 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 [2023-12-16 16:26:43,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2023-12-16 16:26:43,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:26:43,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 16:26:43,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:26:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-16 16:26:43,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:26:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-16 16:26:44,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:26:44,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042093861] [2023-12-16 16:26:44,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042093861] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:26:44,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:26:44,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 29 [2023-12-16 16:26:44,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513489365] [2023-12-16 16:26:44,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:26:44,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 16:26:44,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:26:44,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 16:26:44,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2023-12-16 16:26:44,215 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:26:46,133 INFO L93 Difference]: Finished difference Result 154 states and 191 transitions. [2023-12-16 16:26:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-16 16:26:46,135 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-16 16:26:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:26:46,135 INFO L225 Difference]: With dead ends: 154 [2023-12-16 16:26:46,135 INFO L226 Difference]: Without dead ends: 123 [2023-12-16 16:26:46,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=794, Invalid=1858, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 16:26:46,136 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 278 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 16:26:46,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 191 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 16:26:46,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-16 16:26:46,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2023-12-16 16:26:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 121 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2023-12-16 16:26:46,143 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 85 [2023-12-16 16:26:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:26:46,143 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2023-12-16 16:26:46,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:26:46,144 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2023-12-16 16:26:46,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-16 16:26:46,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:26:46,145 INFO L195 NwaCegarLoop]: trace histogram [46, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:26:46,151 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 [2023-12-16 16:26:46,350 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 [2023-12-16 16:26:46,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:26:46,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:26:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1475056375, now seen corresponding path program 7 times [2023-12-16 16:26:46,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:26:46,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074695575] [2023-12-16 16:26:46,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 16:26:46,352 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 [2023-12-16 16:26:46,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:26:46,353 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) [2023-12-16 16:26:46,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 16:26:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:26:46,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 16:26:46,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:26:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2023-12-16 16:26:47,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:26:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2023-12-16 16:26:51,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:26:51,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074695575] [2023-12-16 16:26:51,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074695575] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:26:51,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:26:51,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-16 16:26:51,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216381603] [2023-12-16 16:26:51,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:26:51,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-16 16:26:51,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:26:51,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-16 16:26:51,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-16 16:26:51,242 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:25,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:27:25,956 INFO L93 Difference]: Finished difference Result 748 states and 911 transitions. [2023-12-16 16:27:25,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-16 16:27:25,957 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-12-16 16:27:25,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:27:25,959 INFO L225 Difference]: With dead ends: 748 [2023-12-16 16:27:25,959 INFO L226 Difference]: Without dead ends: 674 [2023-12-16 16:27:25,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-16 16:27:25,963 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 14202 mSDsluCounter, 5708 mSDsCounter, 0 mSdLazyCounter, 10390 mSolverCounterSat, 2382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14202 SdHoareTripleChecker+Valid, 5830 SdHoareTripleChecker+Invalid, 12772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2382 IncrementalHoareTripleChecker+Valid, 10390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-16 16:27:25,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14202 Valid, 5830 Invalid, 12772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2382 Valid, 10390 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-16 16:27:25,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-12-16 16:27:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 170. [2023-12-16 16:27:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.136094674556213) internal successors, (192), 169 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 192 transitions. [2023-12-16 16:27:25,974 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 192 transitions. Word has length 121 [2023-12-16 16:27:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:27:25,974 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 192 transitions. [2023-12-16 16:27:25,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:27:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 192 transitions. [2023-12-16 16:27:25,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-16 16:27:25,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:27:25,976 INFO L195 NwaCegarLoop]: trace histogram [94, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:27:25,981 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 [2023-12-16 16:27:26,181 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 [2023-12-16 16:27:26,181 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:27:26,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:27:26,182 INFO L85 PathProgramCache]: Analyzing trace with hash -496561911, now seen corresponding path program 8 times [2023-12-16 16:27:26,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:27:26,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031805794] [2023-12-16 16:27:26,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:27:26,182 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 [2023-12-16 16:27:26,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:27:26,183 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) [2023-12-16 16:27:26,184 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 [2023-12-16 16:27:26,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:27:26,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:27:26,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-16 16:27:26,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:27:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5224 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2023-12-16 16:27:29,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:27:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5224 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2023-12-16 16:27:44,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:27:44,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031805794] [2023-12-16 16:27:44,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031805794] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:27:44,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:27:44,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-16 16:27:44,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199731902] [2023-12-16 16:27:44,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:27:44,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-16 16:27:44,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:27:44,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-16 16:27:44,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-16 16:27:44,800 INFO L87 Difference]: Start difference. First operand 170 states and 192 transitions. Second operand has 192 states, 192 states have (on average 1.0416666666666667) internal successors, (200), 191 states have internal predecessors, (200), 0 states have call successors, (0), 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... [2023-12-16 16:27:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:27:45,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-16 16:27:45,020 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 16:27:45,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 16:27:45,021 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:27:45,030 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 [2023-12-16 16:27:45,035 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 [2023-12-16 16:27:45,039 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 (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:27:45,228 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 [2023-12-16 16:27:45,229 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (170states) and FLOYD_HOARE automaton (currently 6 states, 192 states before enhancement),while ReachableStatesComputation was computing reachable states (4 states constructed, input type IntersectNwa). [2023-12-16 16:27:45,233 INFO L445 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1] [2023-12-16 16:27:45,235 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:27:45,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:27:45 BoogieIcfgContainer [2023-12-16 16:27:45,236 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:27:45,236 INFO L158 Benchmark]: Toolchain (without parser) took 75163.65ms. Allocated memory was 323.0MB in the beginning and 388.0MB in the end (delta: 65.0MB). Free memory was 275.0MB in the beginning and 239.1MB in the end (delta: 35.9MB). Peak memory consumption was 102.1MB. Max. memory is 8.0GB. [2023-12-16 16:27:45,236 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 209.7MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:27:45,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.11ms. Allocated memory is still 323.0MB. Free memory was 275.0MB in the beginning and 264.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 16:27:45,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.94ms. Allocated memory is still 323.0MB. Free memory was 264.0MB in the beginning and 262.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 16:27:45,237 INFO L158 Benchmark]: Boogie Preprocessor took 27.10ms. Allocated memory is still 323.0MB. Free memory was 262.4MB in the beginning and 260.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:27:45,237 INFO L158 Benchmark]: RCFGBuilder took 243.40ms. Allocated memory is still 323.0MB. Free memory was 260.3MB in the beginning and 247.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 16:27:45,237 INFO L158 Benchmark]: TraceAbstraction took 74677.80ms. Allocated memory was 323.0MB in the beginning and 388.0MB in the end (delta: 65.0MB). Free memory was 247.2MB in the beginning and 239.1MB in the end (delta: 8.1MB). Peak memory consumption was 73.8MB. Max. memory is 8.0GB. [2023-12-16 16:27:45,238 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 209.7MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 186.11ms. Allocated memory is still 323.0MB. Free memory was 275.0MB in the beginning and 264.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.94ms. Allocated memory is still 323.0MB. Free memory was 264.0MB in the beginning and 262.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.10ms. Allocated memory is still 323.0MB. Free memory was 262.4MB in the beginning and 260.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 243.40ms. Allocated memory is still 323.0MB. Free memory was 260.3MB in the beginning and 247.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 74677.80ms. Allocated memory was 323.0MB in the beginning and 388.0MB in the end (delta: 65.0MB). Free memory was 247.2MB in the beginning and 239.1MB in the end (delta: 8.1MB). Peak memory consumption was 73.8MB. 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: 15]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 15). Cancelled while NwaCegarLoop was constructing difference of abstraction (170states) and FLOYD_HOARE automaton (currently 6 states, 192 states before enhancement),while ReachableStatesComputation was computing reachable states (4 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.6s, OverallIterations: 12, TraceHistogramMax: 94, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 44.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19733 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19733 mSDsluCounter, 8696 SdHoareTripleChecker+Invalid, 7.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8370 mSDsCounter, 3407 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15438 IncrementalHoareTripleChecker+Invalid, 18845 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3407 mSolverCounterUnsat, 326 mSDtfsCounter, 15438 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1279 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 539 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 58.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=11, InterpolantAutomatonStates: 264, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 1045 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 25.8s InterpolantComputationTime, 596 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 1142 ConstructedInterpolants, 0 QuantifiedInterpolants, 2824 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2071 ConjunctsInSsa, 227 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 7948/20074 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