/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/array-examples/standard_running-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 16:26:39,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 16:26:39,747 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 16:26:39,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 16:26:39,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 16:26:39,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 16:26:39,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 16:26:39,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 16:26:39,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 16:26:39,780 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 16:26:39,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 16:26:39,780 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 16:26:39,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 16:26:39,782 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 16:26:39,782 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 16:26:39,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 16:26:39,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 16:26:39,783 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 16:26:39,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 16:26:39,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 16:26:39,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 16:26:39,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 16:26:39,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 16:26:39,784 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 16:26:39,784 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 16:26:39,784 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 16:26:39,784 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 16:26:39,785 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 16:26:39,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 16:26:39,785 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 16:26:39,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 16:26:39,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 16:26:39,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 16:26:39,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 16:26:39,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:26:39,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 16:26:39,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 16:26:39,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 16:26:39,787 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 16:26:39,787 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 16:26:39,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 16:26:39,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 16:26:39,788 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 16:26:39,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 16:26:39,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 16:26:39,789 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 16:26:39,789 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 16:26:39,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 16:26:40,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 16:26:40,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 16:26:40,020 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 16:26:40,020 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 16:26:40,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_running-2.i [2023-12-21 16:26:41,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 16:26:41,301 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 16:26:41,301 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-2.i [2023-12-21 16:26:41,308 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a4e0cbb/89ca9379af094a6399ac086f057a8b04/FLAG79902adc3 [2023-12-21 16:26:41,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a4e0cbb/89ca9379af094a6399ac086f057a8b04 [2023-12-21 16:26:41,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 16:26:41,323 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 16:26:41,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 16:26:41,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 16:26:41,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 16:26:41,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42feae45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41, skipping insertion in model container [2023-12-21 16:26:41,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,345 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 16:26:41,451 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-2.i[811,824] [2023-12-21 16:26:41,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:26:41,469 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 16:26:41,477 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-2.i[811,824] [2023-12-21 16:26:41,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:26:41,495 INFO L206 MainTranslator]: Completed translation [2023-12-21 16:26:41,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41 WrapperNode [2023-12-21 16:26:41,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 16:26:41,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 16:26:41,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 16:26:41,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 16:26:41,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,518 INFO L138 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-12-21 16:26:41,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 16:26:41,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 16:26:41,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 16:26:41,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 16:26:41,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,528 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,535 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2023-12-21 16:26:41,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 16:26:41,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 16:26:41,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 16:26:41,550 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 16:26:41,550 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (1/1) ... [2023-12-21 16:26:41,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:26:41,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 16:26:41,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 16:26:41,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 16:26:41,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 16:26:41,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 16:26:41,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 16:26:41,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 16:26:41,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 16:26:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 16:26:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 16:26:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 16:26:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 16:26:41,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 16:26:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 16:26:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 16:26:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 16:26:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 16:26:41,655 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 16:26:41,657 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 16:26:41,817 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 16:26:41,860 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 16:26:41,861 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 16:26:41,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:26:41 BoogieIcfgContainer [2023-12-21 16:26:41,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 16:26:41,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 16:26:41,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 16:26:41,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 16:26:41,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:26:41" (1/3) ... [2023-12-21 16:26:41,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63391f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:26:41, skipping insertion in model container [2023-12-21 16:26:41,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:41" (2/3) ... [2023-12-21 16:26:41,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63391f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:26:41, skipping insertion in model container [2023-12-21 16:26:41,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:26:41" (3/3) ... [2023-12-21 16:26:41,867 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_running-2.i [2023-12-21 16:26:41,881 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 16:26:41,882 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 16:26:41,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 16:26:41,927 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;@a3c9e89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 16:26:41,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 16:26:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 16:26:41,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:41,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:41,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:41,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:41,941 INFO L85 PathProgramCache]: Analyzing trace with hash -572000217, now seen corresponding path program 1 times [2023-12-21 16:26:41,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:41,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669693652] [2023-12-21 16:26:41,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:41,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:41,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:41,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:26:42,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 16:26:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:42,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 16:26:42,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:26:42,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:26:42,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:42,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669693652] [2023-12-21 16:26:42,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669693652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:26:42,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:26:42,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:26:42,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455284225] [2023-12-21 16:26:42,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:26:42,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 16:26:42,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 16:26:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 16:26:42,133 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 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 4.5) 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) [2023-12-21 16:26:42,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:42,162 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2023-12-21 16:26:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 16:26:42,164 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) 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 [2023-12-21 16:26:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:42,170 INFO L225 Difference]: With dead ends: 38 [2023-12-21 16:26:42,170 INFO L226 Difference]: Without dead ends: 18 [2023-12-21 16:26:42,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 16:26:42,176 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:42,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:26:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-21 16:26:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-21 16:26:42,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:42,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2023-12-21 16:26:42,198 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 9 [2023-12-21 16:26:42,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:42,198 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2023-12-21 16:26:42,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) 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) [2023-12-21 16:26:42,198 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2023-12-21 16:26:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 16:26:42,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:42,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:42,204 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 [2023-12-21 16:26:42,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:42,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:42,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:42,405 INFO L85 PathProgramCache]: Analyzing trace with hash -887814608, now seen corresponding path program 1 times [2023-12-21 16:26:42,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:42,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551203086] [2023-12-21 16:26:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:42,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:42,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:42,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:26:42,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 16:26:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:42,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 16:26:42,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:26:42,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:26:42,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:42,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551203086] [2023-12-21 16:26:42,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551203086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:26:42,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:26:42,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:26:42,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203208634] [2023-12-21 16:26:42,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:26:42,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 16:26:42,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:42,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 16:26:42,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:26:42,486 INFO L87 Difference]: Start difference. First operand 18 states and 25 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) [2023-12-21 16:26:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:42,540 INFO L93 Difference]: Finished difference Result 45 states and 66 transitions. [2023-12-21 16:26:42,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 16:26:42,541 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 [2023-12-21 16:26:42,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:42,542 INFO L225 Difference]: With dead ends: 45 [2023-12-21 16:26:42,542 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 16:26:42,543 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 [2023-12-21 16:26:42,545 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:42,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:26:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 16:26:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2023-12-21 16:26:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2023-12-21 16:26:42,557 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 9 [2023-12-21 16:26:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:42,557 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2023-12-21 16:26:42,558 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) [2023-12-21 16:26:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2023-12-21 16:26:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 16:26:42,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:42,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:42,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 16:26:42,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:42,762 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:42,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash 137950365, now seen corresponding path program 1 times [2023-12-21 16:26:42,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:42,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110137239] [2023-12-21 16:26:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:42,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:42,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:42,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:26:42,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 16:26:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:42,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 16:26:42,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 16:26:42,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 16:26:42,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:42,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110137239] [2023-12-21 16:26:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110137239] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:42,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:42,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 16:26:42,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131568498] [2023-12-21 16:26:42,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:42,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 16:26:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:42,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 16:26:42,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 16:26:42,872 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:43,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:43,018 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2023-12-21 16:26:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 16:26:43,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 20 [2023-12-21 16:26:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:43,020 INFO L225 Difference]: With dead ends: 72 [2023-12-21 16:26:43,020 INFO L226 Difference]: Without dead ends: 54 [2023-12-21 16:26:43,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 16:26:43,021 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 65 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:43,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 50 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:26:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-21 16:26:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-21 16:26:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 53 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) [2023-12-21 16:26:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 76 transitions. [2023-12-21 16:26:43,027 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 76 transitions. Word has length 20 [2023-12-21 16:26:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:43,027 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 76 transitions. [2023-12-21 16:26:43,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 76 transitions. [2023-12-21 16:26:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 16:26:43,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:43,028 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:43,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 16:26:43,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:43,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:43,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:43,233 INFO L85 PathProgramCache]: Analyzing trace with hash 935035248, now seen corresponding path program 2 times [2023-12-21 16:26:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:43,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762775505] [2023-12-21 16:26:43,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:26:43,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:43,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:43,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:26:43,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 16:26:43,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:26:43,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:43,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:26:43,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 16:26:43,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 16:26:43,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762775505] [2023-12-21 16:26:43,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762775505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:43,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:43,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 16:26:43,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886306140] [2023-12-21 16:26:43,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:43,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 16:26:43,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 16:26:43,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 16:26:43,471 INFO L87 Difference]: Start difference. First operand 54 states and 76 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:43,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:43,963 INFO L93 Difference]: Finished difference Result 168 states and 259 transitions. [2023-12-21 16:26:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 16:26:43,964 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 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 53 [2023-12-21 16:26:43,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:43,965 INFO L225 Difference]: With dead ends: 168 [2023-12-21 16:26:43,965 INFO L226 Difference]: Without dead ends: 120 [2023-12-21 16:26:43,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 16:26:43,966 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 364 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:43,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 200 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 16:26:43,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-21 16:26:43,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-12-21 16:26:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4453781512605042) internal successors, (172), 119 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2023-12-21 16:26:43,979 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 53 [2023-12-21 16:26:43,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:43,980 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2023-12-21 16:26:43,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:43,980 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2023-12-21 16:26:43,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 16:26:43,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:43,984 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:43,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 16:26:44,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:44,188 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:44,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:44,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1456275888, now seen corresponding path program 3 times [2023-12-21 16:26:44,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:44,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112612898] [2023-12-21 16:26:44,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:26:44,189 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 [2023-12-21 16:26:44,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:44,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:26:44,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 16:26:44,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 16:26:44,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:44,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:26:44,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2023-12-21 16:26:44,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:26:44,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:44,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112612898] [2023-12-21 16:26:44,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112612898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:26:44,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:26:44,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 16:26:44,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511858130] [2023-12-21 16:26:44,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:26:44,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 16:26:44,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:44,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 16:26:44,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 16:26:44,379 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2023-12-21 16:26:44,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:44,479 INFO L93 Difference]: Finished difference Result 259 states and 387 transitions. [2023-12-21 16:26:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 16:26:44,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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) Word has length 119 [2023-12-21 16:26:44,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:44,481 INFO L225 Difference]: With dead ends: 259 [2023-12-21 16:26:44,481 INFO L226 Difference]: Without dead ends: 190 [2023-12-21 16:26:44,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 16:26:44,482 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:44,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:26:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-21 16:26:44,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 160. [2023-12-21 16:26:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.4591194968553458) internal successors, (232), 159 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 232 transitions. [2023-12-21 16:26:44,517 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 232 transitions. Word has length 119 [2023-12-21 16:26:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:44,517 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 232 transitions. [2023-12-21 16:26:44,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2023-12-21 16:26:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 232 transitions. [2023-12-21 16:26:44,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 16:26:44,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:44,518 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:44,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 16:26:44,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:44,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:44,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash 812012944, now seen corresponding path program 1 times [2023-12-21 16:26:44,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:44,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322601652] [2023-12-21 16:26:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:44,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:44,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:44,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:26:44,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 16:26:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:44,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 16:26:44,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2023-12-21 16:26:44,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2023-12-21 16:26:45,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:45,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322601652] [2023-12-21 16:26:45,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322601652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:45,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:45,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 16:26:45,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51264100] [2023-12-21 16:26:45,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:45,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 16:26:45,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:45,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 16:26:45,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 16:26:45,252 INFO L87 Difference]: Start difference. First operand 160 states and 232 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:46,980 INFO L93 Difference]: Finished difference Result 488 states and 751 transitions. [2023-12-21 16:26:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 16:26:46,981 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-12-21 16:26:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:46,982 INFO L225 Difference]: With dead ends: 488 [2023-12-21 16:26:46,983 INFO L226 Difference]: Without dead ends: 340 [2023-12-21 16:26:46,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 16:26:46,984 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 1768 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:46,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1768 Valid, 833 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 16:26:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-12-21 16:26:46,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2023-12-21 16:26:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.463126843657817) internal successors, (496), 339 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 496 transitions. [2023-12-21 16:26:46,998 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 496 transitions. Word has length 119 [2023-12-21 16:26:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:46,998 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 496 transitions. [2023-12-21 16:26:46,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 496 transitions. [2023-12-21 16:26:47,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-21 16:26:47,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:47,000 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:47,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 16:26:47,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:47,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:47,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1131265232, now seen corresponding path program 2 times [2023-12-21 16:26:47,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:47,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113252305] [2023-12-21 16:26:47,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:26:47,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:47,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:47,226 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:26:47,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 16:26:47,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:26:47,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:47,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 16:26:47,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2023-12-21 16:26:47,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2023-12-21 16:26:49,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:49,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113252305] [2023-12-21 16:26:49,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113252305] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:49,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:49,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 16:26:49,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513951747] [2023-12-21 16:26:49,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:49,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 16:26:49,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 16:26:49,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 16:26:49,142 INFO L87 Difference]: Start difference. First operand 340 states and 496 transitions. Second operand has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:58,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:58,430 INFO L93 Difference]: Finished difference Result 1016 states and 1567 transitions. [2023-12-21 16:26:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 16:26:58,431 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 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 251 [2023-12-21 16:26:58,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:58,433 INFO L225 Difference]: With dead ends: 1016 [2023-12-21 16:26:58,433 INFO L226 Difference]: Without dead ends: 700 [2023-12-21 16:26:58,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 16:26:58,436 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 7709 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 1237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7709 SdHoareTripleChecker+Valid, 3389 SdHoareTripleChecker+Invalid, 6895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1237 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:58,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7709 Valid, 3389 Invalid, 6895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1237 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-21 16:26:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-21 16:26:58,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2023-12-21 16:26:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 699 states have (on average 1.4649499284692418) internal successors, (1024), 699 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1024 transitions. [2023-12-21 16:26:58,451 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1024 transitions. Word has length 251 [2023-12-21 16:26:58,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:58,451 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1024 transitions. [2023-12-21 16:26:58,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 47 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1024 transitions. [2023-12-21 16:26:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-21 16:26:58,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:58,458 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:58,466 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 [2023-12-21 16:26:58,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:58,666 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:58,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:58,667 INFO L85 PathProgramCache]: Analyzing trace with hash 79162192, now seen corresponding path program 3 times [2023-12-21 16:26:58,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:58,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070134748] [2023-12-21 16:26:58,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:26:58,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:58,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:58,676 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:26:58,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 16:26:58,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 16:26:58,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:58,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:26:58,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:58,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2023-12-21 16:26:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 11207 trivial. 0 not checked. [2023-12-21 16:26:58,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:26:58,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:58,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070134748] [2023-12-21 16:26:58,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070134748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:26:58,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:26:58,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 16:26:58,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716550994] [2023-12-21 16:26:58,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:26:58,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 16:26:58,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:58,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 16:26:58,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 16:26:58,958 INFO L87 Difference]: Start difference. First operand 700 states and 1024 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:59,066 INFO L93 Difference]: Finished difference Result 1387 states and 2028 transitions. [2023-12-21 16:26:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 16:26:59,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 515 [2023-12-21 16:26:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:59,072 INFO L225 Difference]: With dead ends: 1387 [2023-12-21 16:26:59,072 INFO L226 Difference]: Without dead ends: 884 [2023-12-21 16:26:59,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 16:26:59,077 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:59,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:26:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2023-12-21 16:26:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 700. [2023-12-21 16:26:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 699 states have (on average 1.3991416309012876) internal successors, (978), 699 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 978 transitions. [2023-12-21 16:26:59,092 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 978 transitions. Word has length 515 [2023-12-21 16:26:59,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:59,094 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 978 transitions. [2023-12-21 16:26:59,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:26:59,094 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 978 transitions. [2023-12-21 16:26:59,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-21 16:26:59,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:59,100 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:59,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-21 16:26:59,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:59,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:59,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:59,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1366358928, now seen corresponding path program 1 times [2023-12-21 16:26:59,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:59,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535784274] [2023-12-21 16:26:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:59,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:26:59,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:59,305 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:26:59,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 16:26:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:59,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 16:26:59,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:27:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 10442 trivial. 0 not checked. [2023-12-21 16:27:00,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:27:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 10442 trivial. 0 not checked. [2023-12-21 16:27:05,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:27:05,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535784274] [2023-12-21 16:27:05,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535784274] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:27:05,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:27:05,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 16:27:05,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899986575] [2023-12-21 16:27:05,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:27:05,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 16:27:05,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:27:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 16:27:05,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 16:27:05,486 INFO L87 Difference]: Start difference. First operand 700 states and 978 transitions. Second operand has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 95 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:28:05,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:28:05,978 INFO L93 Difference]: Finished difference Result 2072 states and 3059 transitions. [2023-12-21 16:28:05,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 16:28:05,978 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 95 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 515 [2023-12-21 16:28:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:28:05,981 INFO L225 Difference]: With dead ends: 2072 [2023-12-21 16:28:05,982 INFO L226 Difference]: Without dead ends: 1420 [2023-12-21 16:28:05,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 49.7s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 16:28:05,988 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 32253 mSDsluCounter, 13389 mSDsCounter, 0 mSdLazyCounter, 22836 mSolverCounterSat, 5061 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32253 SdHoareTripleChecker+Valid, 13679 SdHoareTripleChecker+Invalid, 27897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5061 IncrementalHoareTripleChecker+Valid, 22836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-12-21 16:28:05,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32253 Valid, 13679 Invalid, 27897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5061 Valid, 22836 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-12-21 16:28:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2023-12-21 16:28:06,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1420. [2023-12-21 16:28:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 1.3995771670190276) internal successors, (1986), 1419 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:28:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1986 transitions. [2023-12-21 16:28:06,017 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1986 transitions. Word has length 515 [2023-12-21 16:28:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:28:06,018 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1986 transitions. [2023-12-21 16:28:06,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 95 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:28:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1986 transitions. [2023-12-21 16:28:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2023-12-21 16:28:06,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:28:06,034 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:28:06,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 16:28:06,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:28:06,246 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:28:06,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:28:06,250 INFO L85 PathProgramCache]: Analyzing trace with hash 2053112464, now seen corresponding path program 2 times [2023-12-21 16:28:06,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:28:06,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914330574] [2023-12-21 16:28:06,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:28:06,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:28:06,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:28:06,253 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:28:06,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 16:28:07,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:28:07,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:28:07,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 16:28:07,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:28:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 48363 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 43898 trivial. 0 not checked. [2023-12-21 16:28:10,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:28:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 48363 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 43898 trivial. 0 not checked. [2023-12-21 16:28:28,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:28:28,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914330574] [2023-12-21 16:28:28,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914330574] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:28:28,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:28:28,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 16:28:28,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4032465] [2023-12-21 16:28:28,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:28:28,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 16:28:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:28:28,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 16:28:28,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 16:28:28,728 INFO L87 Difference]: Start difference. First operand 1420 states and 1986 transitions. Second operand has 192 states, 192 states have (on average 1.0885416666666667) internal successors, (209), 191 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:37:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:37:11,979 INFO L93 Difference]: Finished difference Result 4184 states and 6179 transitions. [2023-12-21 16:37:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 16:37:11,979 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0885416666666667) internal successors, (209), 191 states have internal predecessors, (209), 0 states have call successors, (0), 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 1043 [2023-12-21 16:37:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:37:11,986 INFO L225 Difference]: With dead ends: 4184 [2023-12-21 16:37:11,986 INFO L226 Difference]: Without dead ends: 2860 [2023-12-21 16:37:11,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2178 GetRequests, 1894 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 478.8s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 16:37:11,995 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 116987 mSDsluCounter, 54429 mSDsCounter, 0 mSdLazyCounter, 91764 mSolverCounterSat, 18193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116987 SdHoareTripleChecker+Valid, 55007 SdHoareTripleChecker+Invalid, 109957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 18193 IncrementalHoareTripleChecker+Valid, 91764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.6s IncrementalHoareTripleChecker+Time [2023-12-21 16:37:11,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116987 Valid, 55007 Invalid, 109957 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [18193 Valid, 91764 Invalid, 0 Unknown, 0 Unchecked, 58.6s Time] [2023-12-21 16:37:11,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2023-12-21 16:37:12,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2860. [2023-12-21 16:37:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2859 states have (on average 1.3997901364113325) internal successors, (4002), 2859 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:37:12,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4002 transitions. [2023-12-21 16:37:12,055 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4002 transitions. Word has length 1043 [2023-12-21 16:37:12,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:37:12,055 INFO L495 AbstractCegarLoop]: Abstraction has 2860 states and 4002 transitions. [2023-12-21 16:37:12,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0885416666666667) internal successors, (209), 191 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:37:12,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4002 transitions. [2023-12-21 16:37:12,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2100 [2023-12-21 16:37:12,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:37:12,105 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:37:12,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 16:37:12,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:37:12,321 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:37:12,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:37:12,322 INFO L85 PathProgramCache]: Analyzing trace with hash -376958832, now seen corresponding path program 3 times [2023-12-21 16:37:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:37:12,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190234551] [2023-12-21 16:37:12,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:37:12,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:37:12,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:37:12,326 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:37:12,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 16:37:12,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 16:37:12,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:37:12,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 16:37:12,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:37:13,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 16:37:28,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 16:37:28,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-12-21 16:37:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 198075 backedges. 757 proven. 1135 refuted. 0 times theorem prover too weak. 196183 trivial. 0 not checked. [2023-12-21 16:37:28,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:37:40,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-21 16:37:40,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-12-21 16:37:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 198075 backedges. 568 proven. 1324 refuted. 0 times theorem prover too weak. 196183 trivial. 0 not checked. [2023-12-21 16:37:40,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:37:40,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190234551] [2023-12-21 16:37:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190234551] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:37:40,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:37:40,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-21 16:37:40,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870192676] [2023-12-21 16:37:40,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:37:40,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 16:37:40,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:37:40,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 16:37:40,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-12-21 16:37:40,651 INFO L87 Difference]: Start difference. First operand 2860 states and 4002 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:37:42,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:37:42,351 INFO L93 Difference]: Finished difference Result 13061 states and 17224 transitions. [2023-12-21 16:37:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 16:37:42,351 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2099 [2023-12-21 16:37:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:37:42,397 INFO L225 Difference]: With dead ends: 13061 [2023-12-21 16:37:42,397 INFO L226 Difference]: Without dead ends: 13057 [2023-12-21 16:37:42,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4217 GetRequests, 4183 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=328, Invalid=932, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 16:37:42,399 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 159 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 16:37:42,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 92 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 16:37:42,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13057 states. [2023-12-21 16:37:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13057 to 4954. [2023-12-21 16:37:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4954 states, 4953 states have (on average 1.4229759741570764) internal successors, (7048), 4953 states have internal predecessors, (7048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:37:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4954 states to 4954 states and 7048 transitions. [2023-12-21 16:37:42,581 INFO L78 Accepts]: Start accepts. Automaton has 4954 states and 7048 transitions. Word has length 2099 [2023-12-21 16:37:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:37:42,582 INFO L495 AbstractCegarLoop]: Abstraction has 4954 states and 7048 transitions. [2023-12-21 16:37:42,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:37:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4954 states and 7048 transitions. [2023-12-21 16:37:42,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2100 [2023-12-21 16:37:42,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:37:42,609 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 189, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:37:42,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-21 16:37:42,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:37:42,813 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:37:42,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:37:42,814 INFO L85 PathProgramCache]: Analyzing trace with hash 303099538, now seen corresponding path program 1 times [2023-12-21 16:37:42,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:37:42,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39235859] [2023-12-21 16:37:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:37:42,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:37:42,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:37:42,817 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:37:42,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 16:37:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:37:44,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 4784 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 16:37:44,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:37:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 198075 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 179930 trivial. 0 not checked. [2023-12-21 16:37:56,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:39:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 198075 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 179930 trivial. 0 not checked. [2023-12-21 16:39:14,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:39:14,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39235859] [2023-12-21 16:39:14,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39235859] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:39:14,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:39:14,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 16:39:14,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939242106] [2023-12-21 16:39:14,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:39:14,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 16:39:14,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:39:14,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 16:39:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 16:39:14,172 INFO L87 Difference]: Start difference. First operand 4954 states and 7048 transitions. Second operand has 384 states, 384 states have (on average 1.046875) internal successors, (402), 383 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:40:01,190 WARN L293 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:40:28,942 WARN L293 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:40:54,987 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 16:41:15,709 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 [2023-12-21 16:41:15,710 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 [2023-12-21 16:41:16,759 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 (13)] Ended with exit code 0 [2023-12-21 16:41:16,920 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-21 16:41:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-21 16:41:16,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4200 GetRequests, 3814 SyntacticMatches, 0 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.4s TimeCoverageRelationStatistics Valid=38398, Invalid=110984, Unknown=0, NotChecked=0, Total=149382 [2023-12-21 16:41:16,934 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36676 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:16,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36676 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2023-12-21 16:41:16,935 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 16:41:16,935 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (4954states) and FLOYD_HOARE automaton (currently 196 states, 384 states before enhancement),while executing Executor. [2023-12-21 16:41:16,938 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 1, 1, 1] [2023-12-21 16:41:16,940 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 16:41:16,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:41:16 BoogieIcfgContainer [2023-12-21 16:41:16,941 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 16:41:16,942 INFO L158 Benchmark]: Toolchain (without parser) took 875618.71ms. Allocated memory was 275.8MB in the beginning and 574.6MB in the end (delta: 298.8MB). Free memory was 224.8MB in the beginning and 222.7MB in the end (delta: 2.1MB). Peak memory consumption was 424.7MB. Max. memory is 8.0GB. [2023-12-21 16:41:16,942 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 187.7MB. Free memory was 135.1MB in the beginning and 135.0MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 16:41:16,942 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.85ms. Allocated memory is still 275.8MB. Free memory was 224.3MB in the beginning and 213.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 16:41:16,942 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.97ms. Allocated memory is still 275.8MB. Free memory was 213.2MB in the beginning and 211.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 16:41:16,942 INFO L158 Benchmark]: Boogie Preprocessor took 29.89ms. Allocated memory is still 275.8MB. Free memory was 211.7MB in the beginning and 209.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 16:41:16,942 INFO L158 Benchmark]: RCFGBuilder took 311.43ms. Allocated memory is still 275.8MB. Free memory was 209.6MB in the beginning and 194.4MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 16:41:16,943 INFO L158 Benchmark]: TraceAbstraction took 875078.98ms. Allocated memory was 275.8MB in the beginning and 574.6MB in the end (delta: 298.8MB). Free memory was 193.9MB in the beginning and 222.7MB in the end (delta: -28.8MB). Peak memory consumption was 394.3MB. Max. memory is 8.0GB. [2023-12-21 16:41:16,943 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-21 16:41:16,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 187.7MB. Free memory was 135.1MB in the beginning and 135.0MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 170.85ms. Allocated memory is still 275.8MB. Free memory was 224.3MB in the beginning and 213.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.97ms. Allocated memory is still 275.8MB. Free memory was 213.2MB in the beginning and 211.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.89ms. Allocated memory is still 275.8MB. Free memory was 211.7MB in the beginning and 209.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 311.43ms. Allocated memory is still 275.8MB. Free memory was 209.6MB in the beginning and 194.4MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 875078.98ms. Allocated memory was 275.8MB in the beginning and 574.6MB in the end (delta: 298.8MB). Free memory was 193.9MB in the beginning and 222.7MB in the end (delta: -28.8MB). Peak memory consumption was 394.3MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (4954states) and FLOYD_HOARE automaton (currently 196 states, 384 states before enhancement),while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 875.0s, OverallIterations: 12, TraceHistogramMax: 190, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 720.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 159327 SdHoareTripleChecker+Valid, 100.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159327 mSDsluCounter, 73384 SdHoareTripleChecker+Invalid, 87.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72153 mSDsCounter, 24929 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 159032 IncrementalHoareTripleChecker+Invalid, 183961 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24929 mSolverCounterUnsat, 1231 mSDtfsCounter, 159032 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13236 GetRequests, 12264 SyntacticMatches, 0 SemanticMatches, 971 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5939 ImplicationChecksByTransitivity, 705.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4954occurred in iteration=11, InterpolantAutomatonStates: 420, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 8325 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 147.1s InterpolantComputationTime, 6851 NumberOfCodeBlocks, 4205 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 13030 ConstructedInterpolants, 2660 QuantifiedInterpolants, 79489 SizeOfPredicates, 22 NumberOfNonLiveVariables, 9830 ConjunctsInSsa, 408 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 880067/930546 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