/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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 16:26:38,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 16:26:38,596 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 16:26:38,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 16:26:38,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 16:26:38,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 16:26:38,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 16:26:38,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 16:26:38,629 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 16:26:38,633 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 16:26:38,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 16:26:38,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 16:26:38,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 16:26:38,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 16:26:38,636 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 16:26:38,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 16:26:38,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 16:26:38,636 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 16:26:38,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 16:26:38,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 16:26:38,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 16:26:38,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 16:26:38,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 16:26:38,637 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 16:26:38,638 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 16:26:38,638 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 16:26:38,638 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 16:26:38,638 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 16:26:38,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 16:26:38,638 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 16:26:38,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 16:26:38,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 16:26:38,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 16:26:38,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 16:26:38,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:26:38,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 16:26:38,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 16:26:38,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 16:26:38,640 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 16:26:38,640 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 16:26:38,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 16:26:38,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 16:26:38,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 16:26:38,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 16:26:38,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 16:26:38,641 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 16:26:38,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 16:26:38,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 16:26:38,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 16:26:38,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 16:26:38,838 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 16:26:38,839 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 16:26:38,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_running-1.i [2023-12-21 16:26:39,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 16:26:40,121 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 16:26:40,121 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-1.i [2023-12-21 16:26:40,126 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49371f077/1f7f36fc828f41138604b7b04acaae4e/FLAG927bed0c8 [2023-12-21 16:26:40,143 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49371f077/1f7f36fc828f41138604b7b04acaae4e [2023-12-21 16:26:40,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 16:26:40,147 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 16:26:40,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 16:26:40,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 16:26:40,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 16:26:40,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3cdb32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40, skipping insertion in model container [2023-12-21 16:26:40,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,168 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 16:26:40,271 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-1.i[811,824] [2023-12-21 16:26:40,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:26:40,292 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 16:26:40,303 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-1.i[811,824] [2023-12-21 16:26:40,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:26:40,318 INFO L206 MainTranslator]: Completed translation [2023-12-21 16:26:40,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40 WrapperNode [2023-12-21 16:26:40,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 16:26:40,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 16:26:40,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 16:26:40,319 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 16:26:40,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,341 INFO L138 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-12-21 16:26:40,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 16:26:40,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 16:26:40,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 16:26:40,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 16:26:40,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,351 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,374 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, 1, 2]. [2023-12-21 16:26:40,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 16:26:40,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 16:26:40,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 16:26:40,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 16:26:40,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (1/1) ... [2023-12-21 16:26:40,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:26:40,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 16:26:40,431 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 16:26:40,448 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 16:26:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 16:26:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 16:26:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 16:26:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 16:26:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 16:26:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 16:26:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 16:26:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 16:26:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 16:26:40,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 16:26:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 16:26:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 16:26:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 16:26:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 16:26:40,508 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 16:26:40,510 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 16:26:40,692 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 16:26:40,711 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 16:26:40,711 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 16:26:40,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:26:40 BoogieIcfgContainer [2023-12-21 16:26:40,711 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 16:26:40,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 16:26:40,713 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 16:26:40,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 16:26:40,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:26:40" (1/3) ... [2023-12-21 16:26:40,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ba0757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:26:40, skipping insertion in model container [2023-12-21 16:26:40,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:26:40" (2/3) ... [2023-12-21 16:26:40,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ba0757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:26:40, skipping insertion in model container [2023-12-21 16:26:40,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:26:40" (3/3) ... [2023-12-21 16:26:40,723 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_running-1.i [2023-12-21 16:26:40,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 16:26:40,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 16:26:40,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 16:26:40,770 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;@2413dd0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 16:26:40,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 16:26:40,773 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 16:26:40,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 16:26:40,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:40,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:40,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:40,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:40,781 INFO L85 PathProgramCache]: Analyzing trace with hash -572000217, now seen corresponding path program 1 times [2023-12-21 16:26:40,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:40,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663974411] [2023-12-21 16:26:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:40,789 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 16:26:40,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:40,791 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 16:26:40,795 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 16:26:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:40,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 16:26:40,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:40,854 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 16:26:40,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:26:40,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:40,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663974411] [2023-12-21 16:26:40,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663974411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:26:40,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:26:40,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:26:40,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166816205] [2023-12-21 16:26:40,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:26:40,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 16:26:40,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:40,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 16:26:40,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 16:26:40,878 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 16:26:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:40,899 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2023-12-21 16:26:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 16:26:40,901 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 16:26:40,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:40,905 INFO L225 Difference]: With dead ends: 38 [2023-12-21 16:26:40,905 INFO L226 Difference]: Without dead ends: 18 [2023-12-21 16:26:40,907 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 16:26:40,909 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 16:26:40,910 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 16:26:40,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-21 16:26:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-21 16:26:40,928 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 16:26:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2023-12-21 16:26:40,929 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 9 [2023-12-21 16:26:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:40,930 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2023-12-21 16:26:40,930 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 16:26:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2023-12-21 16:26:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 16:26:40,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:40,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:26:40,937 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 16:26:41,133 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 16:26:41,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:41,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:41,134 INFO L85 PathProgramCache]: Analyzing trace with hash -887814608, now seen corresponding path program 1 times [2023-12-21 16:26:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:41,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831634771] [2023-12-21 16:26:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:41,134 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 16:26:41,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:41,136 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 16:26:41,148 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 16:26:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:41,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 16:26:41,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:41,210 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 16:26:41,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:26:41,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:41,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831634771] [2023-12-21 16:26:41,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831634771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:26:41,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:26:41,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:26:41,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259864011] [2023-12-21 16:26:41,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:26:41,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 16:26:41,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:41,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 16:26:41,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:26:41,216 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 16:26:41,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:41,289 INFO L93 Difference]: Finished difference Result 45 states and 66 transitions. [2023-12-21 16:26:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 16:26:41,289 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 16:26:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:41,291 INFO L225 Difference]: With dead ends: 45 [2023-12-21 16:26:41,291 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 16:26:41,291 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 16:26:41,293 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:41,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:26:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 16:26:41,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2023-12-21 16:26:41,297 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 16:26:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2023-12-21 16:26:41,298 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 9 [2023-12-21 16:26:41,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:41,298 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2023-12-21 16:26:41,298 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 16:26:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2023-12-21 16:26:41,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 16:26:41,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:41,299 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 16:26:41,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 16:26:41,500 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 16:26:41,501 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:41,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash 137950365, now seen corresponding path program 1 times [2023-12-21 16:26:41,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:41,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199185540] [2023-12-21 16:26:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:41,502 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 16:26:41,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:41,507 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 16:26:41,508 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 16:26:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:41,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 16:26:41,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:41,583 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 16:26:41,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:41,602 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 16:26:41,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:41,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199185540] [2023-12-21 16:26:41,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199185540] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:41,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:41,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 16:26:41,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077751145] [2023-12-21 16:26:41,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:41,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 16:26:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 16:26:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 16:26:41,610 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 16:26:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:41,780 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2023-12-21 16:26:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 16:26:41,781 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 16:26:41,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:41,782 INFO L225 Difference]: With dead ends: 72 [2023-12-21 16:26:41,782 INFO L226 Difference]: Without dead ends: 54 [2023-12-21 16:26:41,783 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 16:26:41,783 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 16:26:41,783 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 16:26:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-21 16:26:41,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-21 16:26:41,788 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 16:26:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 76 transitions. [2023-12-21 16:26:41,789 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 76 transitions. Word has length 20 [2023-12-21 16:26:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:41,789 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 76 transitions. [2023-12-21 16:26:41,789 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 16:26:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 76 transitions. [2023-12-21 16:26:41,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 16:26:41,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:41,791 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 16:26:41,799 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 16:26:41,992 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 16:26:41,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:41,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash 935035248, now seen corresponding path program 2 times [2023-12-21 16:26:41,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:41,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022740161] [2023-12-21 16:26:41,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:26:41,994 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 16:26:41,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:41,999 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 16:26:41,999 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 16:26:42,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:26:42,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:42,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:26:42,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:42,133 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 16:26:42,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:42,214 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 16:26:42,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:42,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022740161] [2023-12-21 16:26:42,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022740161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:42,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:42,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 16:26:42,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568739786] [2023-12-21 16:26:42,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:42,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 16:26:42,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:42,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 16:26:42,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 16:26:42,216 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 16:26:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:42,725 INFO L93 Difference]: Finished difference Result 168 states and 259 transitions. [2023-12-21 16:26:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 16:26:42,725 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 16:26:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:42,726 INFO L225 Difference]: With dead ends: 168 [2023-12-21 16:26:42,726 INFO L226 Difference]: Without dead ends: 120 [2023-12-21 16:26:42,727 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 16:26:42,727 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 16:26:42,728 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 16:26:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-21 16:26:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-12-21 16:26:42,741 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 16:26:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2023-12-21 16:26:42,747 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 53 [2023-12-21 16:26:42,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:42,747 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2023-12-21 16:26:42,747 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 16:26:42,748 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2023-12-21 16:26:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 16:26:42,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:42,751 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 16:26:42,756 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 (5)] Ended with exit code 0 [2023-12-21 16:26:42,953 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 16:26:42,954 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:42,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:42,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1456275888, now seen corresponding path program 3 times [2023-12-21 16:26:42,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:42,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120887693] [2023-12-21 16:26:42,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:26:42,956 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 16:26:42,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:42,957 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 16:26:42,958 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 16:26:43,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 16:26:43,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:43,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:26:43,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:43,124 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 16:26:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2023-12-21 16:26:43,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:26:43,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:43,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120887693] [2023-12-21 16:26:43,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120887693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:26:43,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:26:43,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 16:26:43,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982099225] [2023-12-21 16:26:43,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:26:43,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 16:26:43,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:43,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 16:26:43,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 16:26:43,142 INFO L87 Difference]: Start difference. First operand 120 states and 172 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 16:26:43,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:43,252 INFO L93 Difference]: Finished difference Result 250 states and 379 transitions. [2023-12-21 16:26:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 16:26:43,253 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 119 [2023-12-21 16:26:43,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:43,256 INFO L225 Difference]: With dead ends: 250 [2023-12-21 16:26:43,256 INFO L226 Difference]: Without dead ends: 180 [2023-12-21 16:26:43,256 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 16:26:43,257 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:43,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:26:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-21 16:26:43,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 160. [2023-12-21 16:26:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.3962264150943395) internal successors, (222), 159 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 16:26:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 222 transitions. [2023-12-21 16:26:43,289 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 222 transitions. Word has length 119 [2023-12-21 16:26:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:43,291 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 222 transitions. [2023-12-21 16:26:43,291 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 16:26:43,291 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 222 transitions. [2023-12-21 16:26:43,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 16:26:43,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:43,294 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 16:26:43,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-21 16:26:43,494 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 16:26:43,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:43,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:43,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1885477296, now seen corresponding path program 1 times [2023-12-21 16:26:43,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:43,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573978337] [2023-12-21 16:26:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:26:43,496 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 16:26:43,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:43,499 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 16:26:43,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 16:26:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:26:43,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 16:26:43,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:43,756 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 16:26:43,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:44,084 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 16:26:44,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:44,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573978337] [2023-12-21 16:26:44,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573978337] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:44,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:44,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 16:26:44,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583833264] [2023-12-21 16:26:44,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:44,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 16:26:44,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:44,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 16:26:44,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 16:26:44,086 INFO L87 Difference]: Start difference. First operand 160 states and 222 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 16:26:45,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:45,710 INFO L93 Difference]: Finished difference Result 488 states and 719 transitions. [2023-12-21 16:26:45,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 16:26:45,710 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 16:26:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:45,711 INFO L225 Difference]: With dead ends: 488 [2023-12-21 16:26:45,711 INFO L226 Difference]: Without dead ends: 340 [2023-12-21 16:26:45,712 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 16:26:45,713 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 1859 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:45,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 827 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 16:26:45,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-12-21 16:26:45,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2023-12-21 16:26:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.3982300884955752) internal successors, (474), 339 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 16:26:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 474 transitions. [2023-12-21 16:26:45,735 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 474 transitions. Word has length 119 [2023-12-21 16:26:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:45,735 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 474 transitions. [2023-12-21 16:26:45,735 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 16:26:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 474 transitions. [2023-12-21 16:26:45,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-21 16:26:45,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:45,757 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 16:26:45,763 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 16:26:45,957 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 16:26:45,958 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:45,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:45,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1998407664, now seen corresponding path program 2 times [2023-12-21 16:26:45,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:45,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528285363] [2023-12-21 16:26:45,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:26:45,959 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 16:26:45,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:45,960 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 16:26:45,981 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 16:26:46,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:26:46,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:46,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 16:26:46,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:46,487 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 16:26:46,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:26:47,633 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 16:26:47,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:26:47,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528285363] [2023-12-21 16:26:47,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528285363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:26:47,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:26:47,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 16:26:47,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52905888] [2023-12-21 16:26:47,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:26:47,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 16:26:47,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:26:47,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 16:26:47,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 16:26:47,636 INFO L87 Difference]: Start difference. First operand 340 states and 474 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 16:26:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:26:56,452 INFO L93 Difference]: Finished difference Result 1016 states and 1499 transitions. [2023-12-21 16:26:56,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 16:26:56,453 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 16:26:56,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:26:56,455 INFO L225 Difference]: With dead ends: 1016 [2023-12-21 16:26:56,455 INFO L226 Difference]: Without dead ends: 700 [2023-12-21 16:26:56,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 16:26:56,457 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 6838 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 5664 mSolverCounterSat, 1103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6838 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 6767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1103 IncrementalHoareTripleChecker+Valid, 5664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-21 16:26:56,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6838 Valid, 3395 Invalid, 6767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1103 Valid, 5664 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-21 16:26:56,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-21 16:26:56,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2023-12-21 16:26:56,472 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 16:26:56,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 978 transitions. [2023-12-21 16:26:56,474 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 978 transitions. Word has length 251 [2023-12-21 16:26:56,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:26:56,474 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 978 transitions. [2023-12-21 16:26:56,474 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 16:26:56,474 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 978 transitions. [2023-12-21 16:26:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-21 16:26:56,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:26:56,479 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 16:26:56,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-21 16:26:56,685 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 16:26:56,685 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:26:56,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:26:56,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1366358928, now seen corresponding path program 3 times [2023-12-21 16:26:56,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:26:56,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998162371] [2023-12-21 16:26:56,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:26:56,687 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 16:26:56,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:26:56,688 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 16:26:56,690 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 16:26:56,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 16:26:56,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:26:56,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 16:26:56,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:26:57,049 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 16:27:00,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 16:27:00,885 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 16:27:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 181 proven. 271 refuted. 0 times theorem prover too weak. 11071 trivial. 0 not checked. [2023-12-21 16:27:01,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:27:04,105 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 16:27:04,110 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 16:27:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 136 proven. 316 refuted. 0 times theorem prover too weak. 11071 trivial. 0 not checked. [2023-12-21 16:27:04,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:27:04,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998162371] [2023-12-21 16:27:04,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998162371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:27:04,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:27:04,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-21 16:27:04,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590230059] [2023-12-21 16:27:04,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:27:04,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 16:27:04,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:27:04,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 16:27:04,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-12-21 16:27:04,190 INFO L87 Difference]: Start difference. First operand 700 states and 978 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 16:27:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:27:05,770 INFO L93 Difference]: Finished difference Result 3125 states and 4120 transitions. [2023-12-21 16:27:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 16:27:05,771 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 515 [2023-12-21 16:27:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:27:05,779 INFO L225 Difference]: With dead ends: 3125 [2023-12-21 16:27:05,779 INFO L226 Difference]: Without dead ends: 3121 [2023-12-21 16:27:05,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 1015 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=328, Invalid=932, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 16:27:05,781 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 219 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 16:27:05,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 113 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 16:27:05,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2023-12-21 16:27:05,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1210. [2023-12-21 16:27:05,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 1.4226633581472292) internal successors, (1720), 1209 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states 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 16:27:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1720 transitions. [2023-12-21 16:27:05,850 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1720 transitions. Word has length 515 [2023-12-21 16:27:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:27:05,851 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1720 transitions. [2023-12-21 16:27:05,851 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 16:27:05,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1720 transitions. [2023-12-21 16:27:05,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-21 16:27:05,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:27:05,857 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:27:05,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 16:27:06,060 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 16:27:06,061 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:27:06,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:27:06,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2046417298, now seen corresponding path program 1 times [2023-12-21 16:27:06,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:27:06,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415000843] [2023-12-21 16:27:06,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:27:06,062 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 16:27:06,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:27:06,063 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 16:27:06,065 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 16:27:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:27:06,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 16:27:06,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:27:07,276 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 16:27:07,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:27:12,074 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 16:27:12,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:27:12,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415000843] [2023-12-21 16:27:12,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415000843] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:27:12,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:27:12,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 16:27:12,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843702974] [2023-12-21 16:27:12,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:27:12,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 16:27:12,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:27:12,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 16:27:12,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 16:27:12,078 INFO L87 Difference]: Start difference. First operand 1210 states and 1720 transitions. Second operand has 96 states, 96 states have (on average 1.1875) internal successors, (114), 95 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 16:28:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:28:12,967 INFO L93 Difference]: Finished difference Result 4206 states and 5993 transitions. [2023-12-21 16:28:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 16:28:12,968 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1875) internal successors, (114), 95 states have internal predecessors, (114), 0 states have call successors, (0), 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 16:28:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:28:12,992 INFO L225 Difference]: With dead ends: 4206 [2023-12-21 16:28:12,993 INFO L226 Difference]: Without dead ends: 3044 [2023-12-21 16:28:12,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 50.4s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 16:28:12,997 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 30433 mSDsluCounter, 13389 mSDsCounter, 0 mSdLazyCounter, 22836 mSolverCounterSat, 4781 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30433 SdHoareTripleChecker+Valid, 13679 SdHoareTripleChecker+Invalid, 27617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4781 IncrementalHoareTripleChecker+Valid, 22836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-12-21 16:28:12,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30433 Valid, 13679 Invalid, 27617 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4781 Valid, 22836 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2023-12-21 16:28:12,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2023-12-21 16:28:13,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 2458. [2023-12-21 16:28:13,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2458 states, 2457 states have (on average 1.4228734228734228) internal successors, (3496), 2457 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states 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 16:28:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2458 states to 2458 states and 3496 transitions. [2023-12-21 16:28:13,131 INFO L78 Accepts]: Start accepts. Automaton has 2458 states and 3496 transitions. Word has length 515 [2023-12-21 16:28:13,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:28:13,131 INFO L495 AbstractCegarLoop]: Abstraction has 2458 states and 3496 transitions. [2023-12-21 16:28:13,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1875) internal successors, (114), 95 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 16:28:13,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2458 states and 3496 transitions. [2023-12-21 16:28:13,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2023-12-21 16:28:13,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:28:13,141 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:28:13,158 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 16:28:13,356 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 16:28:13,356 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:28:13,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:28:13,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1561796462, now seen corresponding path program 2 times [2023-12-21 16:28:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:28:13,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011802274] [2023-12-21 16:28:13,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:28:13,358 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 16:28:13,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:28:13,359 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 16:28:13,361 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 16:28:14,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:28:14,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:28:14,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 16:28:14,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:28:17,272 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 16:28:17,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:28:35,859 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 16:28:35,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:28:35,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011802274] [2023-12-21 16:28:35,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011802274] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:28:35,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:28:35,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 16:28:35,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957999623] [2023-12-21 16:28:35,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:28:35,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 16:28:35,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:28:35,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 16:28:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 16:28:35,867 INFO L87 Difference]: Start difference. First operand 2458 states and 3496 transitions. Second operand has 192 states, 192 states have (on average 1.09375) internal successors, (210), 191 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:37:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:37:33,235 INFO L93 Difference]: Finished difference Result 8478 states and 12089 transitions. [2023-12-21 16:37:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 16:37:33,235 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.09375) internal successors, (210), 191 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1043 [2023-12-21 16:37:33,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:37:33,248 INFO L225 Difference]: With dead ends: 8478 [2023-12-21 16:37:33,248 INFO L226 Difference]: Without dead ends: 6116 [2023-12-21 16:37:33,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2178 GetRequests, 1894 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 492.9s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 16:37:33,255 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 116532 mSDsluCounter, 54432 mSDsCounter, 0 mSdLazyCounter, 91767 mSolverCounterSat, 18123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116532 SdHoareTripleChecker+Valid, 55010 SdHoareTripleChecker+Invalid, 109890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 18123 IncrementalHoareTripleChecker+Valid, 91767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:37:33,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116532 Valid, 55010 Invalid, 109890 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [18123 Valid, 91767 Invalid, 0 Unknown, 0 Unchecked, 58.1s Time] [2023-12-21 16:37:33,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6116 states. [2023-12-21 16:37:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6116 to 4954. [2023-12-21 16:37:33,405 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 16:37:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4954 states to 4954 states and 7048 transitions. [2023-12-21 16:37:33,412 INFO L78 Accepts]: Start accepts. Automaton has 4954 states and 7048 transitions. Word has length 1043 [2023-12-21 16:37:33,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:37:33,412 INFO L495 AbstractCegarLoop]: Abstraction has 4954 states and 7048 transitions. [2023-12-21 16:37:33,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.09375) internal successors, (210), 191 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:37:33,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4954 states and 7048 transitions. [2023-12-21 16:37:33,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2100 [2023-12-21 16:37:33,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:37:33,475 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 16:37:33,515 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 16:37:33,688 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 16:37:33,688 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:37:33,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:37:33,689 INFO L85 PathProgramCache]: Analyzing trace with hash 303099538, now seen corresponding path program 3 times [2023-12-21 16:37:33,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:37:33,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962526507] [2023-12-21 16:37:33,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:37:33,692 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 16:37:33,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:37:33,693 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 16:37:33,695 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 16:37:34,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 16:37:34,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:37:34,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 16:37:34,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:37:35,039 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 16:37:35,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-21 16:37:57,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 16:37:57,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 48 [2023-12-21 16:37:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 198075 backedges. 945 proven. 2453 refuted. 0 times theorem prover too weak. 194677 trivial. 0 not checked. [2023-12-21 16:37:58,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:38:11,650 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 27 treesize of output 25 [2023-12-21 16:38:11,664 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 27 treesize of output 21 [2023-12-21 16:38:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 198075 backedges. 943 proven. 2455 refuted. 0 times theorem prover too weak. 194677 trivial. 0 not checked. [2023-12-21 16:38:11,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:38:11,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962526507] [2023-12-21 16:38:11,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962526507] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:38:11,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:38:11,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 16:38:11,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116345696] [2023-12-21 16:38:11,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:38:11,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 16:38:11,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:38:11,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 16:38:11,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2023-12-21 16:38:11,690 INFO L87 Difference]: Start difference. First operand 4954 states and 7048 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:38:16,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 16:38:21,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 16:38:25,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 16:38:34,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:38:34,559 INFO L93 Difference]: Finished difference Result 49357 states and 65892 transitions. [2023-12-21 16:38:34,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 16:38:34,559 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2099 [2023-12-21 16:38:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:38:34,643 INFO L225 Difference]: With dead ends: 49357 [2023-12-21 16:38:34,643 INFO L226 Difference]: Without dead ends: 49353 [2023-12-21 16:38:34,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4269 GetRequests, 4181 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2194 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1487, Invalid=5823, Unknown=0, NotChecked=0, Total=7310 [2023-12-21 16:38:34,652 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 804 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 193 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:38:34,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 145 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 292 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2023-12-21 16:38:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49353 states. [2023-12-21 16:38:35,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49353 to 9150. [2023-12-21 16:38:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9150 states, 9149 states have (on average 1.4373155536124167) internal successors, (13150), 9149 states have internal predecessors, (13150), 0 states have call successors, (0), 0 states 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 16:38:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9150 states to 9150 states and 13150 transitions. [2023-12-21 16:38:35,484 INFO L78 Accepts]: Start accepts. Automaton has 9150 states and 13150 transitions. Word has length 2099 [2023-12-21 16:38:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:38:35,486 INFO L495 AbstractCegarLoop]: Abstraction has 9150 states and 13150 transitions. [2023-12-21 16:38:35,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:38:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 9150 states and 13150 transitions. [2023-12-21 16:38:35,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2100 [2023-12-21 16:38:35,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:38:35,520 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 188, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:38:35,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 16:38:35,739 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 16:38:35,740 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:38:35,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:38:35,741 INFO L85 PathProgramCache]: Analyzing trace with hash -717968816, now seen corresponding path program 4 times [2023-12-21 16:38:35,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:38:35,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372691500] [2023-12-21 16:38:35,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 16:38:35,743 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 16:38:35,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:38:35,751 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 16:38:35,753 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 16:38:37,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 16:38:37,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:38:37,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 4783 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 16:38:37,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:38:49,736 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 16:38:49,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:40:08,926 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 16:40:08,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:40:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372691500] [2023-12-21 16:40:08,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372691500] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:40:08,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:40:08,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 16:40:08,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918765911] [2023-12-21 16:40:08,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:40:08,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 16:40:08,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:40:08,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 16:40:08,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 16:40:08,941 INFO L87 Difference]: Start difference. First operand 9150 states and 13150 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 16:40:55,609 WARN L293 SmtUtils]: Spent 8.67s 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) Received shutdown request... [2023-12-21 16:41:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2023-12-21 16:41:08,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4198 GetRequests, 3814 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 115.3s TimeCoverageRelationStatistics Valid=37630, Invalid=110210, Unknown=0, NotChecked=0, Total=147840 [2023-12-21 16:41:08,764 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 16:41:08,764 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 16:41:08,765 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36674 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2023-12-21 16:41:08,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36675 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36674 Invalid, 0 Unknown, 0 Unchecked, 19.7s Time] [2023-12-21 16:41:08,766 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 16:41:08,817 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 16:41:08,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:41:08,975 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (9150states) and FLOYD_HOARE automaton (currently 194 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 385 known predicates. [2023-12-21 16:41:08,978 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1] [2023-12-21 16:41:08,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 16:41:08,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:41:08 BoogieIcfgContainer [2023-12-21 16:41:08,988 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 16:41:08,988 INFO L158 Benchmark]: Toolchain (without parser) took 868841.15ms. Allocated memory was 192.9MB in the beginning and 979.4MB in the end (delta: 786.4MB). Free memory was 148.4MB in the beginning and 715.5MB in the end (delta: -567.1MB). Peak memory consumption was 689.5MB. Max. memory is 8.0GB. [2023-12-21 16:41:08,988 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 149.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 16:41:08,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.39ms. Allocated memory is still 192.9MB. Free memory was 148.4MB in the beginning and 136.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 16:41:08,989 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.79ms. Allocated memory is still 192.9MB. Free memory was 136.8MB in the beginning and 135.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 16:41:08,989 INFO L158 Benchmark]: Boogie Preprocessor took 43.34ms. Allocated memory is still 192.9MB. Free memory was 135.2MB in the beginning and 133.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 16:41:08,989 INFO L158 Benchmark]: RCFGBuilder took 325.62ms. Allocated memory is still 192.9MB. Free memory was 133.1MB in the beginning and 118.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 16:41:08,989 INFO L158 Benchmark]: TraceAbstraction took 868275.00ms. Allocated memory was 192.9MB in the beginning and 979.4MB in the end (delta: 786.4MB). Free memory was 117.4MB in the beginning and 715.5MB in the end (delta: -598.1MB). Peak memory consumption was 658.0MB. Max. memory is 8.0GB. [2023-12-21 16:41:08,990 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 149.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 170.39ms. Allocated memory is still 192.9MB. Free memory was 148.4MB in the beginning and 136.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.79ms. Allocated memory is still 192.9MB. Free memory was 136.8MB in the beginning and 135.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.34ms. Allocated memory is still 192.9MB. Free memory was 135.2MB in the beginning and 133.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 325.62ms. Allocated memory is still 192.9MB. Free memory was 133.1MB in the beginning and 118.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 868275.00ms. Allocated memory was 192.9MB in the beginning and 979.4MB in the end (delta: 786.4MB). Free memory was 117.4MB in the beginning and 715.5MB in the end (delta: -598.1MB). Peak memory consumption was 658.0MB. 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 (9150states) and FLOYD_HOARE automaton (currently 194 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 385 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 868.2s, OverallIterations: 12, TraceHistogramMax: 190, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 694.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 157133 SdHoareTripleChecker+Valid, 112.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 157133 mSDsluCounter, 73508 SdHoareTripleChecker+Invalid, 100.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72281 mSDsCounter, 24646 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 159292 IncrementalHoareTripleChecker+Invalid, 183941 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24646 mSolverCounterUnsat, 1227 mSDtfsCounter, 159292 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13819 GetRequests, 12765 SyntacticMatches, 4 SemanticMatches, 1049 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 675.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9150occurred in iteration=11, InterpolantAutomatonStates: 483, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 43890 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 165.8s InterpolantComputationTime, 6851 NumberOfCodeBlocks, 4229 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 13544 ConstructedInterpolants, 3300 QuantifiedInterpolants, 112860 SizeOfPredicates, 27 NumberOfNonLiveVariables, 9821 ConjunctsInSsa, 419 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 888554/942069 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