/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_find_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 15:57:00,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 15:57:00,459 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 15:57:00,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 15:57:00,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 15:57:00,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 15:57:00,492 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 15:57:00,492 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 15:57:00,493 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 15:57:00,496 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 15:57:00,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 15:57:00,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 15:57:00,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 15:57:00,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 15:57:00,498 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 15:57:00,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 15:57:00,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 15:57:00,498 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 15:57:00,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 15:57:00,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 15:57:00,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 15:57:00,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 15:57:00,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 15:57:00,499 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 15:57:00,499 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 15:57:00,500 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 15:57:00,500 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 15:57:00,500 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 15:57:00,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 15:57:00,500 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 15:57:00,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 15:57:00,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 15:57:00,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 15:57:00,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 15:57:00,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:57:00,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 15:57:00,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 15:57:00,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 15:57:00,502 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 15:57:00,502 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 15:57:00,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 15:57:00,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 15:57:00,502 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 15:57:00,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 15:57:00,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 15:57:00,503 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 15:57:00,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 15:57:00,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 15:57:00,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 15:57:00,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 15:57:00,732 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 15:57:00,732 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 15:57:00,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_find_ground-1.i [2023-12-21 15:57:01,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 15:57:01,963 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 15:57:01,963 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_find_ground-1.i [2023-12-21 15:57:01,968 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/881e34b66/1fa0fe6b20b84532b5013b79268b7560/FLAGda90e3913 [2023-12-21 15:57:01,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/881e34b66/1fa0fe6b20b84532b5013b79268b7560 [2023-12-21 15:57:01,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 15:57:01,981 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 15:57:01,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 15:57:01,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 15:57:01,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 15:57:01,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:57:01" (1/1) ... [2023-12-21 15:57:01,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5636b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:01, skipping insertion in model container [2023-12-21 15:57:01,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:57:01" (1/1) ... [2023-12-21 15:57:02,005 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 15:57:02,121 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_find_ground-1.i[855,868] [2023-12-21 15:57:02,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:57:02,145 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 15:57:02,157 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_find_ground-1.i[855,868] [2023-12-21 15:57:02,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:57:02,177 INFO L206 MainTranslator]: Completed translation [2023-12-21 15:57:02,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02 WrapperNode [2023-12-21 15:57:02,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 15:57:02,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 15:57:02,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 15:57:02,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 15:57:02,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,207 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2023-12-21 15:57:02,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 15:57:02,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 15:57:02,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 15:57:02,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 15:57:02,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,241 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-21 15:57:02,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 15:57:02,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 15:57:02,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 15:57:02,266 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 15:57:02,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (1/1) ... [2023-12-21 15:57:02,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:57:02,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 15:57:02,313 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 15:57:02,352 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 15:57:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 15:57:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 15:57:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 15:57:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 15:57:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 15:57:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 15:57:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 15:57:02,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 15:57:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 15:57:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 15:57:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 15:57:02,455 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 15:57:02,457 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 15:57:02,560 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 15:57:02,582 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 15:57:02,582 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 15:57:02,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:57:02 BoogieIcfgContainer [2023-12-21 15:57:02,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 15:57:02,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 15:57:02,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 15:57:02,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 15:57:02,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:57:01" (1/3) ... [2023-12-21 15:57:02,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3575d778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:57:02, skipping insertion in model container [2023-12-21 15:57:02,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:57:02" (2/3) ... [2023-12-21 15:57:02,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3575d778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:57:02, skipping insertion in model container [2023-12-21 15:57:02,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:57:02" (3/3) ... [2023-12-21 15:57:02,591 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_find_ground-1.i [2023-12-21 15:57:02,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 15:57:02,604 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 15:57:02,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 15:57:02,661 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;@7a46c2ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 15:57:02,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 15:57:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-21 15:57:02,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:57:02,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:57:02,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:57:02,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:57:02,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2080607968, now seen corresponding path program 1 times [2023-12-21 15:57:02,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:57:02,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289710512] [2023-12-21 15:57:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:57:02,686 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 15:57:02,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:57:02,688 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 15:57:02,708 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 15:57:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:57:02,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 15:57:02,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:57:02,770 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 15:57:02,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:57:02,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:57:02,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289710512] [2023-12-21 15:57:02,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289710512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:57:02,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:57:02,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:57:02,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978438575] [2023-12-21 15:57:02,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:57:02,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 15:57:02,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:57:02,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 15:57:02,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:57:02,813 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:57:02,847 INFO L93 Difference]: Finished difference Result 24 states and 36 transitions. [2023-12-21 15:57:02,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 15:57:02,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-21 15:57:02,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:57:02,856 INFO L225 Difference]: With dead ends: 24 [2023-12-21 15:57:02,856 INFO L226 Difference]: Without dead ends: 11 [2023-12-21 15:57:02,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:57:02,860 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:57:02,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:57:02,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-21 15:57:02,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-21 15:57:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 15:57:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2023-12-21 15:57:02,880 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 7 [2023-12-21 15:57:02,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:57:02,881 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2023-12-21 15:57:02,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2023-12-21 15:57:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 15:57:02,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:57:02,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:57:02,899 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 15:57:03,084 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 15:57:03,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:57:03,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:57:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash -999958823, now seen corresponding path program 1 times [2023-12-21 15:57:03,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:57:03,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155503214] [2023-12-21 15:57:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:57:03,087 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 15:57:03,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:57:03,096 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 15:57:03,098 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 15:57:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:57:03,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:57:03,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:57:03,176 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 15:57:03,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:57:03,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:57:03,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155503214] [2023-12-21 15:57:03,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155503214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:57:03,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:57:03,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:57:03,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77093349] [2023-12-21 15:57:03,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:57:03,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:57:03,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:57:03,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:57:03,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:57:03,178 INFO L87 Difference]: Start difference. First operand 11 states and 14 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 15:57:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:57:03,195 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2023-12-21 15:57:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:57:03,196 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 15:57:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:57:03,196 INFO L225 Difference]: With dead ends: 21 [2023-12-21 15:57:03,196 INFO L226 Difference]: Without dead ends: 12 [2023-12-21 15:57:03,197 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 15:57:03,197 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:57:03,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:57:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-21 15:57:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-21 15:57:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 15:57:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2023-12-21 15:57:03,201 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 9 [2023-12-21 15:57:03,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:57:03,201 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2023-12-21 15:57:03,201 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 15:57:03,201 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2023-12-21 15:57:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 15:57:03,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:57:03,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:57:03,219 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 (3)] Ended with exit code 0 [2023-12-21 15:57:03,406 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 15:57:03,406 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:57:03,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:57:03,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1071725599, now seen corresponding path program 1 times [2023-12-21 15:57:03,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:57:03,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530731068] [2023-12-21 15:57:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:57:03,407 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 15:57:03,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:57:03,409 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 15:57:03,410 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 15:57:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:57:03,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:57:03,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:57:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:57:03,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:57:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:57:03,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:57:03,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530731068] [2023-12-21 15:57:03,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530731068] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:57:03,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:57:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 15:57:03,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962087271] [2023-12-21 15:57:03,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:57:03,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 15:57:03,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:57:03,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 15:57:03,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 15:57:03,523 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:03,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:57:03,562 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2023-12-21 15:57:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:57:03,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-21 15:57:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:57:03,563 INFO L225 Difference]: With dead ends: 24 [2023-12-21 15:57:03,563 INFO L226 Difference]: Without dead ends: 15 [2023-12-21 15:57:03,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 15:57:03,564 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:57:03,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:57:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-21 15:57:03,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-21 15:57:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 15:57:03,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2023-12-21 15:57:03,567 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2023-12-21 15:57:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:57:03,567 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2023-12-21 15:57:03,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-12-21 15:57:03,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-21 15:57:03,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:57:03,568 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:57:03,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 15:57:03,772 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 15:57:03,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:57:03,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:57:03,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2058877017, now seen corresponding path program 2 times [2023-12-21 15:57:03,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:57:03,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015882436] [2023-12-21 15:57:03,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:57:03,774 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 15:57:03,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:57:03,775 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 15:57:03,777 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 15:57:03,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 15:57:03,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:57:03,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:57:03,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:57:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 15:57:03,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:57:03,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:57:03,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015882436] [2023-12-21 15:57:03,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015882436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:57:03,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:57:03,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 15:57:03,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729508952] [2023-12-21 15:57:03,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:57:03,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 15:57:03,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:57:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 15:57:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 15:57:03,865 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:57:03,889 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2023-12-21 15:57:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 15:57:03,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-21 15:57:03,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:57:03,890 INFO L225 Difference]: With dead ends: 25 [2023-12-21 15:57:03,890 INFO L226 Difference]: Without dead ends: 18 [2023-12-21 15:57:03,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 15:57:03,891 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:57:03,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:57:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-21 15:57:03,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-21 15:57:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-21 15:57:03,896 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 13 [2023-12-21 15:57:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:57:03,896 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-21 15:57:03,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:03,897 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-21 15:57:03,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 15:57:03,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:57:03,897 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:57:03,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 15:57:04,099 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 15:57:04,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:57:04,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:57:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2046598258, now seen corresponding path program 1 times [2023-12-21 15:57:04,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:57:04,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083132798] [2023-12-21 15:57:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:57:04,101 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 15:57:04,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:57:04,102 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 15:57:04,103 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 15:57:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:57:04,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 15:57:04,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:57:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 15:57:04,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:57:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 15:57:04,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:57:04,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083132798] [2023-12-21 15:57:04,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083132798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:57:04,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:57:04,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 15:57:04,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269562972] [2023-12-21 15:57:04,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:57:04,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 15:57:04,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:57:04,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 15:57:04,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 15:57:04,256 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:04,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:57:04,420 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2023-12-21 15:57:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 15:57:04,420 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-21 15:57:04,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:57:04,421 INFO L225 Difference]: With dead ends: 36 [2023-12-21 15:57:04,421 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 15:57:04,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 15:57:04,422 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:57:04,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:57:04,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 15:57:04,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-21 15:57:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 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 15:57:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-12-21 15:57:04,427 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2023-12-21 15:57:04,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:57:04,427 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-12-21 15:57:04,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:04,427 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-12-21 15:57:04,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 15:57:04,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:57:04,430 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:57:04,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 15:57:04,633 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 15:57:04,633 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:57:04,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:57:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1449121230, now seen corresponding path program 2 times [2023-12-21 15:57:04,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:57:04,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815079769] [2023-12-21 15:57:04,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:57:04,634 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 15:57:04,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:57:04,636 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 15:57:04,636 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 15:57:04,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:57:04,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:57:04,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 15:57:04,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:57:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 15:57:04,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:57:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 15:57:05,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:57:05,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815079769] [2023-12-21 15:57:05,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815079769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:57:05,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:57:05,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 15:57:05,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086616069] [2023-12-21 15:57:05,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:57:05,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 15:57:05,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:57:05,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 15:57:05,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 15:57:05,089 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:05,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:57:05,855 INFO L93 Difference]: Finished difference Result 48 states and 67 transitions. [2023-12-21 15:57:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 15:57:05,855 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 15:57:05,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:57:05,856 INFO L225 Difference]: With dead ends: 48 [2023-12-21 15:57:05,856 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 15:57:05,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 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 15:57:05,857 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:57:05,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:57:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 15:57:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-21 15:57:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2023-12-21 15:57:05,868 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 22 [2023-12-21 15:57:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:57:05,868 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2023-12-21 15:57:05,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2023-12-21 15:57:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 15:57:05,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:57:05,869 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:57:05,874 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 15:57:06,069 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 15:57:06,070 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:57:06,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:57:06,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1370532430, now seen corresponding path program 3 times [2023-12-21 15:57:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:57:06,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422925272] [2023-12-21 15:57:06,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 15:57:06,071 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 15:57:06,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:57:06,072 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 15:57:06,072 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 15:57:06,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 15:57:06,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:57:06,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 15:57:06,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:57:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-21 15:57:06,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:57:06,343 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-12-21 15:57:06,343 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 15 treesize of output 9 [2023-12-21 15:57:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-21 15:57:06,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:57:06,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422925272] [2023-12-21 15:57:06,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422925272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:57:06,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:57:06,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-21 15:57:06,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907561679] [2023-12-21 15:57:06,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:57:06,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 15:57:06,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:57:06,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 15:57:06,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-21 15:57:06,405 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:06,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:57:06,506 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2023-12-21 15:57:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 15:57:06,507 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 15:57:06,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:57:06,507 INFO L225 Difference]: With dead ends: 42 [2023-12-21 15:57:06,507 INFO L226 Difference]: Without dead ends: 40 [2023-12-21 15:57:06,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-12-21 15:57:06,508 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:57:06,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 44 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:57:06,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-21 15:57:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-12-21 15:57:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 15:57:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2023-12-21 15:57:06,514 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 34 [2023-12-21 15:57:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:57:06,514 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2023-12-21 15:57:06,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:57:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2023-12-21 15:57:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 15:57:06,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:57:06,515 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:57:06,534 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 15:57:06,717 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 15:57:06,717 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:57:06,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:57:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1567310707, now seen corresponding path program 1 times [2023-12-21 15:57:06,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:57:06,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841850414] [2023-12-21 15:57:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:57:06,718 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 15:57:06,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:57:06,719 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 15:57:06,722 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 15:57:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:57:06,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 15:57:06,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:57:07,136 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 15:57:07,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:57:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 15:57:08,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:57:08,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841850414] [2023-12-21 15:57:08,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841850414] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:57:08,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:57:08,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 15:57:08,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611209650] [2023-12-21 15:57:08,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:57:08,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 15:57:08,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:57:08,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 15:57:08,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 15:57:08,439 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 15:57:13,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:57:13,779 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2023-12-21 15:57:13,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 15:57:13,780 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 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 37 [2023-12-21 15:57:13,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:57:13,780 INFO L225 Difference]: With dead ends: 76 [2023-12-21 15:57:13,781 INFO L226 Difference]: Without dead ends: 62 [2023-12-21 15:57:13,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 15:57:13,782 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 15:57:13,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 15:57:13,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-21 15:57:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-21 15:57:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 15:57:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2023-12-21 15:57:13,790 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 37 [2023-12-21 15:57:13,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:57:13,790 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2023-12-21 15:57:13,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 15:57:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2023-12-21 15:57:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 15:57:13,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:57:13,791 INFO L195 NwaCegarLoop]: trace histogram [46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:57:13,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-21 15:57:13,997 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 15:57:13,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:57:13,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:57:13,997 INFO L85 PathProgramCache]: Analyzing trace with hash 501925261, now seen corresponding path program 2 times [2023-12-21 15:57:13,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:57:13,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291059113] [2023-12-21 15:57:13,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:57:13,998 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 15:57:13,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:57:13,999 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 15:57:14,000 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 15:57:14,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:57:14,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:57:14,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 15:57:14,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:57:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 15:57:15,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:57:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 15:57:19,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:57:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291059113] [2023-12-21 15:57:19,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291059113] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:57:19,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:57:19,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 15:57:19,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384755698] [2023-12-21 15:57:19,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:57:19,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 15:57:19,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:57:19,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 15:57:19,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 15:57:19,632 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 96 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 95 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 15:58:05,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:58:05,406 INFO L93 Difference]: Finished difference Result 124 states and 179 transitions. [2023-12-21 15:58:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 15:58:05,407 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 95 states have internal predecessors, (106), 0 states have call successors, (0), 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 61 [2023-12-21 15:58:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:58:05,407 INFO L225 Difference]: With dead ends: 124 [2023-12-21 15:58:05,408 INFO L226 Difference]: Without dead ends: 110 [2023-12-21 15:58:05,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 49.6s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 15:58:05,411 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 15:58:05,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 511 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 15:58:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-21 15:58:05,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-12-21 15:58:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 109 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 15:58:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2023-12-21 15:58:05,421 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 61 [2023-12-21 15:58:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:58:05,421 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2023-12-21 15:58:05,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1041666666666667) internal successors, (106), 95 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 15:58:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2023-12-21 15:58:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 15:58:05,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:58:05,423 INFO L195 NwaCegarLoop]: trace histogram [94, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:58:05,427 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 (10)] Ended with exit code 0 [2023-12-21 15:58:05,627 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 15:58:05,627 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:58:05,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:58:05,628 INFO L85 PathProgramCache]: Analyzing trace with hash 934664077, now seen corresponding path program 3 times [2023-12-21 15:58:05,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:58:05,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675245888] [2023-12-21 15:58:05,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 15:58:05,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 15:58:05,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:58:05,629 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 15:58:05,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 15:58:05,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 15:58:05,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:58:05,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 15:58:05,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:58:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 15:58:05,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:58:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 15:58:06,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:58:06,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675245888] [2023-12-21 15:58:06,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675245888] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:58:06,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:58:06,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-21 15:58:06,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015379940] [2023-12-21 15:58:06,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:58:06,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 15:58:06,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:58:06,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 15:58:06,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 15:58:06,087 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 15:58:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:58:06,166 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2023-12-21 15:58:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:58:06,167 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 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 109 [2023-12-21 15:58:06,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:58:06,169 INFO L225 Difference]: With dead ends: 123 [2023-12-21 15:58:06,169 INFO L226 Difference]: Without dead ends: 113 [2023-12-21 15:58:06,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 15:58:06,169 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:58:06,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 45 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:58:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-21 15:58:06,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-12-21 15:58:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0535714285714286) internal successors, (118), 112 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 15:58:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2023-12-21 15:58:06,189 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 109 [2023-12-21 15:58:06,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:58:06,189 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 118 transitions. [2023-12-21 15:58:06,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 15:58:06,190 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 118 transitions. [2023-12-21 15:58:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 15:58:06,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:58:06,192 INFO L195 NwaCegarLoop]: trace histogram [94, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:58:06,195 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 15:58:06,394 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 15:58:06,395 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:58:06,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:58:06,395 INFO L85 PathProgramCache]: Analyzing trace with hash 22952294, now seen corresponding path program 4 times [2023-12-21 15:58:06,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:58:06,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789484280] [2023-12-21 15:58:06,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 15:58:06,396 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 15:58:06,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:58:06,397 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 15:58:06,397 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 15:58:06,614 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 15:58:06,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:58:06,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 15:58:06,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:58:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4476 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 15:58:09,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:58:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4476 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 15:58:28,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:58:28,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789484280] [2023-12-21 15:58:28,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789484280] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:58:28,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:58:28,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 15:58:28,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685934021] [2023-12-21 15:58:28,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:58:28,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 15:58:28,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:58:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 15:58:28,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 15:58:28,227 INFO L87 Difference]: Start difference. First operand 113 states and 118 transitions. Second operand has 192 states, 192 states have (on average 1.0520833333333333) internal successors, (202), 191 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:06:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:06:29,593 INFO L93 Difference]: Finished difference Result 226 states and 331 transitions. [2023-12-21 16:06:29,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 16:06:29,594 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0520833333333333) internal successors, (202), 191 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-12-21 16:06:29,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:06:29,595 INFO L225 Difference]: With dead ends: 226 [2023-12-21 16:06:29,595 INFO L226 Difference]: Without dead ends: 209 [2023-12-21 16:06:29,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 497.4s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 16:06:29,600 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 9417 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 9418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-21 16:06:29,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1011 Invalid, 9418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9417 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-21 16:06:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-21 16:06:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-12-21 16:06:29,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.0288461538461537) internal successors, (214), 208 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 16:06:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 214 transitions. [2023-12-21 16:06:29,621 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 214 transitions. Word has length 112 [2023-12-21 16:06:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:06:29,622 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 214 transitions. [2023-12-21 16:06:29,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0520833333333333) internal successors, (202), 191 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:06:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 214 transitions. [2023-12-21 16:06:29,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-21 16:06:29,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:06:29,627 INFO L195 NwaCegarLoop]: trace histogram [190, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:06:29,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-21 16:06:29,834 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 16:06:29,834 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:06:29,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:06:29,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1536584346, now seen corresponding path program 5 times [2023-12-21 16:06:29,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:06:29,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147367373] [2023-12-21 16:06:29,835 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 16:06:29,835 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 16:06:29,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:06:29,836 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 16:06:29,838 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 16:06:53,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2023-12-21 16:06:53,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:06:53,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 16:06:53,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:06:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 18156 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 17955 trivial. 0 not checked. [2023-12-21 16:06:53,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:06:54,001 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-12-21 16:06:54,001 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 17 treesize of output 9 [2023-12-21 16:06:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 18156 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2023-12-21 16:06:54,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:06:54,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147367373] [2023-12-21 16:06:54,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147367373] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:06:54,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:06:54,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2023-12-21 16:06:54,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628414442] [2023-12-21 16:06:54,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:06:54,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 16:06:54,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:06:54,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 16:06:54,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 16:06:54,286 INFO L87 Difference]: Start difference. First operand 209 states and 214 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:06:54,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:06:54,557 INFO L93 Difference]: Finished difference Result 230 states and 239 transitions. [2023-12-21 16:06:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 16:06:54,558 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-21 16:06:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:06:54,559 INFO L225 Difference]: With dead ends: 230 [2023-12-21 16:06:54,560 INFO L226 Difference]: Without dead ends: 218 [2023-12-21 16:06:54,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2023-12-21 16:06:54,560 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:06:54,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 71 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:06:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-21 16:06:54,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 215. [2023-12-21 16:06:54,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.02803738317757) internal successors, (220), 214 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:06:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 220 transitions. [2023-12-21 16:06:54,580 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 220 transitions. Word has length 208 [2023-12-21 16:06:54,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:06:54,580 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 220 transitions. [2023-12-21 16:06:54,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:06:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 220 transitions. [2023-12-21 16:06:54,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 16:06:54,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:06:54,582 INFO L195 NwaCegarLoop]: trace histogram [190, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-21 16:06:54,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 16:06:54,802 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 16:06:54,802 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:06:54,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:06:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash -617615271, now seen corresponding path program 6 times [2023-12-21 16:06:54,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:06:54,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930640034] [2023-12-21 16:06:54,803 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 16:06:54,803 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 16:06:54,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:06:54,804 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:06:54,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 16:06:55,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 16:06:55,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:06:55,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 16:06:55,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:06:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18161 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2023-12-21 16:06:55,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:06:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 18161 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2023-12-21 16:06:56,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:06:56,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930640034] [2023-12-21 16:06:56,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930640034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:06:56,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:06:56,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2023-12-21 16:06:56,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424321165] [2023-12-21 16:06:56,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:06:56,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 16:06:56,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:06:56,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 16:06:56,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-12-21 16:06:56,091 INFO L87 Difference]: Start difference. First operand 215 states and 220 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 16:06:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:06:56,206 INFO L93 Difference]: Finished difference Result 241 states and 251 transitions. [2023-12-21 16:06:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 16:06:56,207 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 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 211 [2023-12-21 16:06:56,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:06:56,211 INFO L225 Difference]: With dead ends: 241 [2023-12-21 16:06:56,211 INFO L226 Difference]: Without dead ends: 219 [2023-12-21 16:06:56,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-12-21 16:06:56,211 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:06:56,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:06:56,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-21 16:06:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2023-12-21 16:06:56,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.0276497695852536) internal successors, (223), 217 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 16:06:56,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 223 transitions. [2023-12-21 16:06:56,224 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 223 transitions. Word has length 211 [2023-12-21 16:06:56,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:06:56,224 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 223 transitions. [2023-12-21 16:06:56,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 16:06:56,225 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 223 transitions. [2023-12-21 16:06:56,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-21 16:06:56,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:06:56,226 INFO L195 NwaCegarLoop]: trace histogram [190, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-21 16:06:56,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 16:06:56,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:06:56,429 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:06:56,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:06:56,430 INFO L85 PathProgramCache]: Analyzing trace with hash -542964878, now seen corresponding path program 7 times [2023-12-21 16:06:56,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:06:56,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723840889] [2023-12-21 16:06:56,430 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 16:06:56,430 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 16:06:56,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:06:56,431 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:06:56,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 16:06:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:06:56,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 16:06:56,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:07:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18170 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 16:07:07,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:08:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18170 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 16:08:25,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:08:25,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723840889] [2023-12-21 16:08:25,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723840889] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:08:25,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:08:25,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 16:08:25,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679788938] [2023-12-21 16:08:25,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:08:25,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 16:08:25,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:08:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 16:08:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 16:08:25,143 INFO L87 Difference]: Start difference. First operand 218 states and 223 transitions. Second operand has 384 states, 384 states have (on average 1.0260416666666667) internal successors, (394), 383 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 16:09:09,595 WARN L293 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:09:35,829 WARN L293 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:10:03,307 WARN L293 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:10:31,509 WARN L293 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 565 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:11:00,174 WARN L293 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 16:11:31,818 WARN L293 SmtUtils]: Spent 8.32s on a formula simplification. DAG size of input: 559 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 16:11:44,893 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 16:11:44,893 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 16:11:44,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2023-12-21 16:11:44,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 254.0s TimeCoverageRelationStatistics Valid=39550, Invalid=112160, Unknown=0, NotChecked=0, Total=151710 [2023-12-21 16:11:44,924 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36679 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:11:44,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36679 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2023-12-21 16:11:44,925 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 16:11:44,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 16:11:45,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:11:45,127 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (218states) and FLOYD_HOARE automaton (currently 199 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 390 known predicates. [2023-12-21 16:11:45,131 INFO L445 BasicCegarLoop]: Path program histogram: [7, 3, 2, 1, 1] [2023-12-21 16:11:45,132 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 16:11:45,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:11:45 BoogieIcfgContainer [2023-12-21 16:11:45,134 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 16:11:45,134 INFO L158 Benchmark]: Toolchain (without parser) took 883152.58ms. Allocated memory was 245.4MB in the beginning and 294.6MB in the end (delta: 49.3MB). Free memory was 194.5MB in the beginning and 119.2MB in the end (delta: 75.3MB). Peak memory consumption was 202.7MB. Max. memory is 8.0GB. [2023-12-21 16:11:45,134 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 158.3MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 16:11:45,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.61ms. Allocated memory is still 245.4MB. Free memory was 194.2MB in the beginning and 182.6MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 16:11:45,134 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.33ms. Allocated memory is still 245.4MB. Free memory was 182.6MB in the beginning and 181.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 16:11:45,135 INFO L158 Benchmark]: Boogie Preprocessor took 56.89ms. Allocated memory is still 245.4MB. Free memory was 181.0MB in the beginning and 179.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 16:11:45,135 INFO L158 Benchmark]: RCFGBuilder took 316.67ms. Allocated memory is still 245.4MB. Free memory was 179.0MB in the beginning and 166.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 16:11:45,135 INFO L158 Benchmark]: TraceAbstraction took 882547.54ms. Allocated memory was 245.4MB in the beginning and 294.6MB in the end (delta: 49.3MB). Free memory was 165.9MB in the beginning and 119.2MB in the end (delta: 46.8MB). Peak memory consumption was 173.4MB. Max. memory is 8.0GB. [2023-12-21 16:11:45,136 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 158.3MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.61ms. Allocated memory is still 245.4MB. Free memory was 194.2MB in the beginning and 182.6MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.33ms. Allocated memory is still 245.4MB. Free memory was 182.6MB in the beginning and 181.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.89ms. Allocated memory is still 245.4MB. Free memory was 181.0MB in the beginning and 179.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 316.67ms. Allocated memory is still 245.4MB. Free memory was 179.0MB in the beginning and 166.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 882547.54ms. Allocated memory was 245.4MB in the beginning and 294.6MB in the end (delta: 49.3MB). Free memory was 165.9MB in the beginning and 119.2MB in the end (delta: 46.8MB). Peak memory consumption was 173.4MB. 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: 14]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 14). Cancelled while NwaCegarLoop was constructing difference of abstraction (218states) and FLOYD_HOARE automaton (currently 199 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 390 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 882.5s, OverallIterations: 14, TraceHistogramMax: 190, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 734.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 24.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 2283 SdHoareTripleChecker+Invalid, 21.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2151 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49800 IncrementalHoareTripleChecker+Invalid, 49817 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 132 mSDtfsCounter, 49800 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2268 GetRequests, 1274 SyntacticMatches, 0 SemanticMatches, 993 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5875 ImplicationChecksByTransitivity, 809.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=13, InterpolantAutomatonStates: 428, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 24.1s SatisfiabilityAnalysisTime, 119.9s InterpolantComputationTime, 1063 NumberOfCodeBlocks, 765 NumberOfCodeBlocksAsserted, 117 NumberOfCheckSat, 2072 ConstructedInterpolants, 0 QuantifiedInterpolants, 9599 SizeOfPredicates, 28 NumberOfNonLiveVariables, 3447 ConjunctsInSsa, 425 ConjunctsInUnsatCore, 25 InterpolantComputations, 3 PerfectInterpolantSequences, 81949/130220 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