/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/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-92.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 02:28:10,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 02:28:10,926 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 02:28:10,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 02:28:10,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 02:28:10,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 02:28:10,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 02:28:10,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 02:28:10,955 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 02:28:10,956 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 02:28:10,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 02:28:10,961 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 02:28:10,961 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 02:28:10,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 02:28:10,966 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 02:28:10,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 02:28:10,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 02:28:10,968 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 02:28:10,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 02:28:10,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 02:28:10,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 02:28:10,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 02:28:10,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 02:28:10,970 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 02:28:10,970 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 02:28:10,970 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 02:28:10,971 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 02:28:10,971 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 02:28:10,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 02:28:10,971 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 02:28:10,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 02:28:10,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 02:28:10,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 02:28:10,972 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 02:28:10,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 02:28:10,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 02:28:10,973 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 02:28:10,973 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 02:28:10,973 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 02:28:10,973 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 02:28:10,974 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 02:28:10,974 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 02:28:10,974 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 02:28:10,974 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 02:28:10,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 02:28:10,975 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 02:28:10,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 02:28:11,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 02:28:11,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 02:28:11,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 02:28:11,167 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 02:28:11,168 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 02:28:11,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-92.i [2023-12-24 02:28:12,204 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 02:28:12,348 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 02:28:12,348 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-92.i [2023-12-24 02:28:12,354 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea7c3130/3912133c932c499baca4fc9b6b75fad0/FLAG3903ee49e [2023-12-24 02:28:12,363 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea7c3130/3912133c932c499baca4fc9b6b75fad0 [2023-12-24 02:28:12,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 02:28:12,366 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 02:28:12,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 02:28:12,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 02:28:12,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 02:28:12,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a11b730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12, skipping insertion in model container [2023-12-24 02:28:12,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,389 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 02:28:12,484 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-92.i[915,928] [2023-12-24 02:28:12,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 02:28:12,518 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 02:28:12,527 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-92.i[915,928] [2023-12-24 02:28:12,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 02:28:12,549 INFO L206 MainTranslator]: Completed translation [2023-12-24 02:28:12,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12 WrapperNode [2023-12-24 02:28:12,550 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 02:28:12,551 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 02:28:12,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 02:28:12,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 02:28:12,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,577 INFO L138 Inliner]: procedures = 27, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2023-12-24 02:28:12,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 02:28:12,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 02:28:12,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 02:28:12,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 02:28:12,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,595 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 02:28:12,595 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,596 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,602 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 02:28:12,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 02:28:12,607 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 02:28:12,607 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 02:28:12,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (1/1) ... [2023-12-24 02:28:12,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 02:28:12,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 02:28:12,633 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) [2023-12-24 02:28:12,652 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 [2023-12-24 02:28:12,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 02:28:12,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 02:28:12,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 02:28:12,659 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 02:28:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 02:28:12,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 02:28:12,734 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 02:28:12,737 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 02:28:13,216 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 02:28:13,269 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 02:28:13,270 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 02:28:13,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:28:13 BoogieIcfgContainer [2023-12-24 02:28:13,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 02:28:13,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 02:28:13,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 02:28:13,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 02:28:13,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 02:28:12" (1/3) ... [2023-12-24 02:28:13,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307cdd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:28:13, skipping insertion in model container [2023-12-24 02:28:13,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:28:12" (2/3) ... [2023-12-24 02:28:13,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307cdd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:28:13, skipping insertion in model container [2023-12-24 02:28:13,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:28:13" (3/3) ... [2023-12-24 02:28:13,276 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-92.i [2023-12-24 02:28:13,314 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 02:28:13,315 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 02:28:13,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 02:28:13,359 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;@186e8e8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 02:28:13,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 02:28:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 02:28:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 02:28:13,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:28:13,373 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:28:13,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:28:13,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:28:13,378 INFO L85 PathProgramCache]: Analyzing trace with hash 12788562, now seen corresponding path program 1 times [2023-12-24 02:28:13,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:28:13,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557498880] [2023-12-24 02:28:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:28:13,389 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 [2023-12-24 02:28:13,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:28:13,391 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) [2023-12-24 02:28:13,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 02:28:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:28:13,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 02:28:13,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:28:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-24 02:28:13,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 02:28:13,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:28:13,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557498880] [2023-12-24 02:28:13,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557498880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 02:28:13,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 02:28:13,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 02:28:13,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391379430] [2023-12-24 02:28:13,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:28:13,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 02:28:13,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:28:13,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 02:28:13,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 02:28:13,615 INFO L87 Difference]: Start difference. First operand has 46 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 02:28:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:28:13,769 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2023-12-24 02:28:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 02:28:13,777 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 104 [2023-12-24 02:28:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:28:13,783 INFO L225 Difference]: With dead ends: 89 [2023-12-24 02:28:13,783 INFO L226 Difference]: Without dead ends: 44 [2023-12-24 02:28:13,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 02:28:13,792 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 02:28:13,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 02:28:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-24 02:28:13,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-24 02:28:13,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 02:28:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 65 transitions. [2023-12-24 02:28:13,857 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 65 transitions. Word has length 104 [2023-12-24 02:28:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:28:13,857 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 65 transitions. [2023-12-24 02:28:13,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-24 02:28:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 65 transitions. [2023-12-24 02:28:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 02:28:13,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:28:13,861 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:28:13,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 02:28:14,089 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 [2023-12-24 02:28:14,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:28:14,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:28:14,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1236019116, now seen corresponding path program 1 times [2023-12-24 02:28:14,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:28:14,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760713861] [2023-12-24 02:28:14,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:28:14,095 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 [2023-12-24 02:28:14,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:28:14,099 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) [2023-12-24 02:28:14,100 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 [2023-12-24 02:28:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:28:14,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 02:28:14,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:28:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 232 proven. 12 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-24 02:28:14,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:28:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 02:28:14,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:28:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760713861] [2023-12-24 02:28:14,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760713861] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 02:28:14,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 02:28:14,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-24 02:28:14,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444773192] [2023-12-24 02:28:14,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:28:14,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 02:28:14,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:28:14,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 02:28:14,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-24 02:28:14,504 INFO L87 Difference]: Start difference. First operand 44 states and 65 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 02:28:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:28:14,987 INFO L93 Difference]: Finished difference Result 118 states and 173 transitions. [2023-12-24 02:28:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 02:28:14,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 104 [2023-12-24 02:28:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:28:14,989 INFO L225 Difference]: With dead ends: 118 [2023-12-24 02:28:14,989 INFO L226 Difference]: Without dead ends: 75 [2023-12-24 02:28:14,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 02:28:14,991 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 74 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 02:28:14,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 238 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 02:28:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-24 02:28:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2023-12-24 02:28:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-24 02:28:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 106 transitions. [2023-12-24 02:28:15,001 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 106 transitions. Word has length 104 [2023-12-24 02:28:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:28:15,001 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 106 transitions. [2023-12-24 02:28:15,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 02:28:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 106 transitions. [2023-12-24 02:28:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 02:28:15,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:28:15,003 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:28:15,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 02:28:15,208 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 [2023-12-24 02:28:15,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:28:15,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:28:15,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1178760814, now seen corresponding path program 1 times [2023-12-24 02:28:15,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:28:15,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34597110] [2023-12-24 02:28:15,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:28:15,210 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 [2023-12-24 02:28:15,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:28:15,213 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) [2023-12-24 02:28:15,214 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 [2023-12-24 02:28:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:28:15,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 02:28:15,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:28:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 302 proven. 27 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-12-24 02:28:26,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:29:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 02:29:11,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:29:11,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34597110] [2023-12-24 02:29:11,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34597110] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 02:29:11,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 02:29:11,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2023-12-24 02:29:11,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367072433] [2023-12-24 02:29:11,917 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 02:29:11,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 02:29:11,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:29:11,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 02:29:11,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-12-24 02:29:11,919 INFO L87 Difference]: Start difference. First operand 72 states and 106 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-24 02:29:46,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:29:46,051 INFO L93 Difference]: Finished difference Result 115 states and 153 transitions. [2023-12-24 02:29:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 02:29:46,061 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 104 [2023-12-24 02:29:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:29:46,065 INFO L225 Difference]: With dead ends: 115 [2023-12-24 02:29:46,065 INFO L226 Difference]: Without dead ends: 113 [2023-12-24 02:29:46,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2023-12-24 02:29:46,066 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 185 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2023-12-24 02:29:46,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 180 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 25.9s Time] [2023-12-24 02:29:46,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-24 02:29:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 84. [2023-12-24 02:29:46,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 53 states have internal predecessors, (63), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-24 02:29:46,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 117 transitions. [2023-12-24 02:29:46,077 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 117 transitions. Word has length 104 [2023-12-24 02:29:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:29:46,078 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 117 transitions. [2023-12-24 02:29:46,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-24 02:29:46,080 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 117 transitions. [2023-12-24 02:29:46,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 02:29:46,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:29:46,085 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:29:46,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-24 02:29:46,290 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 [2023-12-24 02:29:46,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:29:46,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:29:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1988107440, now seen corresponding path program 1 times [2023-12-24 02:29:46,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:29:46,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449376332] [2023-12-24 02:29:46,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:29:46,292 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 [2023-12-24 02:29:46,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:29:46,293 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) [2023-12-24 02:29:46,298 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 [2023-12-24 02:29:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:29:46,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 02:29:46,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:30:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 02:30:04,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:30:41,768 WARN L293 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 79 DAG size of output: 87 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 02:31:21,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:31:21,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449376332] [2023-12-24 02:31:21,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449376332] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 02:31:21,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [432768070] [2023-12-24 02:31:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:31:21,404 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 02:31:21,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 02:31:21,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 02:31:21,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-24 02:31:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:31:21,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 02:31:21,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:32:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 286 proven. 198 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-24 02:32:41,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:34:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 02:34:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [432768070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 02:34:42,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-24 02:34:42,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 39, 9] total 63 [2023-12-24 02:34:42,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470916852] [2023-12-24 02:34:42,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-24 02:34:42,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-24 02:34:42,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:34:42,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-24 02:34:42,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=663, Invalid=3893, Unknown=0, NotChecked=0, Total=4556 [2023-12-24 02:34:42,651 INFO L87 Difference]: Start difference. First operand 84 states and 117 transitions. Second operand has 63 states, 63 states have (on average 1.873015873015873) internal successors, (118), 57 states have internal predecessors, (118), 18 states have call successors, (50), 17 states have call predecessors, (50), 22 states have return successors, (51), 18 states have call predecessors, (51), 18 states have call successors, (51) [2023-12-24 02:36:42,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:36:42,283 INFO L93 Difference]: Finished difference Result 186 states and 205 transitions. [2023-12-24 02:36:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-24 02:36:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.873015873015873) internal successors, (118), 57 states have internal predecessors, (118), 18 states have call successors, (50), 17 states have call predecessors, (50), 22 states have return successors, (51), 18 states have call predecessors, (51), 18 states have call successors, (51) Word has length 104 [2023-12-24 02:36:42,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:36:42,296 INFO L225 Difference]: With dead ends: 186 [2023-12-24 02:36:42,296 INFO L226 Difference]: Without dead ends: 184 [2023-12-24 02:36:42,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4348 ImplicationChecksByTransitivity, 257.0s TimeCoverageRelationStatistics Valid=2403, Invalid=11639, Unknown=0, NotChecked=0, Total=14042 [2023-12-24 02:36:42,300 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 271 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.4s IncrementalHoareTripleChecker+Time [2023-12-24 02:36:42,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 497 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 32.4s Time] [2023-12-24 02:36:42,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-24 02:36:42,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 96. [2023-12-24 02:36:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 65 states have internal predecessors, (71), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 02:36:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2023-12-24 02:36:42,311 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 104 [2023-12-24 02:36:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:36:42,312 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2023-12-24 02:36:42,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.873015873015873) internal successors, (118), 57 states have internal predecessors, (118), 18 states have call successors, (50), 17 states have call predecessors, (50), 22 states have return successors, (51), 18 states have call predecessors, (51), 18 states have call successors, (51) [2023-12-24 02:36:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2023-12-24 02:36:42,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 02:36:42,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:36:42,314 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:36:42,322 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 [2023-12-24 02:36:42,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-24 02:36:42,723 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=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 02:36:42,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:36:42,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:36:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash 323127254, now seen corresponding path program 1 times [2023-12-24 02:36:42,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:36:42,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509012806] [2023-12-24 02:36:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:36:42,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 02:36:42,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:36:42,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 02:36:42,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 02:36:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:36:42,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 02:36:42,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:36:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 232 proven. 12 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-24 02:36:42,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:36:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 02:36:42,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:36:42,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509012806] [2023-12-24 02:36:42,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509012806] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 02:36:42,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 02:36:42,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-24 02:36:42,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135015942] [2023-12-24 02:36:42,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:36:42,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 02:36:42,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:36:42,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 02:36:42,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-24 02:36:42,969 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 02:36:43,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:36:43,667 INFO L93 Difference]: Finished difference Result 260 states and 280 transitions. [2023-12-24 02:36:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 02:36:43,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 105 [2023-12-24 02:36:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:36:43,669 INFO L225 Difference]: With dead ends: 260 [2023-12-24 02:36:43,669 INFO L226 Difference]: Without dead ends: 165 [2023-12-24 02:36:43,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 02:36:43,670 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 70 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 02:36:43,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 238 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 02:36:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-24 02:36:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 97. [2023-12-24 02:36:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 02:36:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2023-12-24 02:36:43,680 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 105 [2023-12-24 02:36:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:36:43,680 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2023-12-24 02:36:43,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-24 02:36:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2023-12-24 02:36:43,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 02:36:43,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:36:43,681 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:36:43,691 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 (7)] Ended with exit code 0 [2023-12-24 02:36:43,890 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 [2023-12-24 02:36:43,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:36:43,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:36:43,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2098134616, now seen corresponding path program 1 times [2023-12-24 02:36:43,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:36:43,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345722384] [2023-12-24 02:36:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:36:43,892 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 [2023-12-24 02:36:43,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:36:43,893 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) [2023-12-24 02:36:43,894 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 [2023-12-24 02:36:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:36:43,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 02:36:43,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:36:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 302 proven. 27 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-12-24 02:36:59,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:37:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 02:37:59,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:37:59,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345722384] [2023-12-24 02:37:59,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345722384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 02:37:59,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 02:37:59,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2023-12-24 02:37:59,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781377936] [2023-12-24 02:37:59,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 02:37:59,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 02:37:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:37:59,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 02:37:59,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-12-24 02:37:59,696 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-24 02:38:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:38:27,159 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2023-12-24 02:38:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 02:38:27,170 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 105 [2023-12-24 02:38:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:38:27,171 INFO L225 Difference]: With dead ends: 125 [2023-12-24 02:38:27,171 INFO L226 Difference]: Without dead ends: 123 [2023-12-24 02:38:27,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2023-12-24 02:38:27,173 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 113 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2023-12-24 02:38:27,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 171 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2023-12-24 02:38:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-24 02:38:27,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 102. [2023-12-24 02:38:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 71 states have internal predecessors, (80), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 02:38:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2023-12-24 02:38:27,183 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 105 [2023-12-24 02:38:27,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:38:27,183 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2023-12-24 02:38:27,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-24 02:38:27,184 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2023-12-24 02:38:27,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 02:38:27,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:38:27,185 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:38:27,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 02:38:27,390 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 [2023-12-24 02:38:27,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:38:27,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:38:27,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1516774310, now seen corresponding path program 1 times [2023-12-24 02:38:27,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:38:27,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56856499] [2023-12-24 02:38:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:38:27,391 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 [2023-12-24 02:38:27,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:38:27,394 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) [2023-12-24 02:38:27,409 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 [2023-12-24 02:38:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:38:27,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 02:38:27,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:38:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 382 proven. 81 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-24 02:38:50,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:39:28,031 WARN L293 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 79 DAG size of output: 87 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 02:40:21,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:40:21,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56856499] [2023-12-24 02:40:21,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56856499] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 02:40:21,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1115781399] [2023-12-24 02:40:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:40:21,655 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 02:40:21,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 02:40:21,657 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 02:40:21,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 02:40:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:40:22,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 02:40:22,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:41:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 288 proven. 195 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-24 02:41:58,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:42:41,056 WARN L293 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 82 DAG size of output: 90 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-24 02:42:52,656 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 02:42:52,656 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 02:42:52,656 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 [2023-12-24 02:42:52,754 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 02:42:52,765 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 [2023-12-24 02:42:52,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-24 02:42:53,158 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=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 02:42:53,159 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 106 with TraceHistMax 17,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-2-1 context. [2023-12-24 02:42:53,163 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:42:53,164 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 02:42:53,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 02:42:53 BoogieIcfgContainer [2023-12-24 02:42:53,166 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 02:42:53,166 INFO L158 Benchmark]: Toolchain (without parser) took 880800.13ms. Allocated memory was 202.4MB in the beginning and 369.1MB in the end (delta: 166.7MB). Free memory was 148.2MB in the beginning and 293.1MB in the end (delta: -144.8MB). Peak memory consumption was 203.1MB. Max. memory is 8.0GB. [2023-12-24 02:42:53,166 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 202.4MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 02:42:53,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.36ms. Allocated memory is still 202.4MB. Free memory was 147.9MB in the beginning and 134.6MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-24 02:42:53,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.55ms. Allocated memory is still 202.4MB. Free memory was 134.6MB in the beginning and 132.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 02:42:53,167 INFO L158 Benchmark]: Boogie Preprocessor took 28.45ms. Allocated memory is still 202.4MB. Free memory was 132.5MB in the beginning and 129.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 02:42:53,167 INFO L158 Benchmark]: RCFGBuilder took 663.51ms. Allocated memory is still 202.4MB. Free memory was 129.7MB in the beginning and 111.5MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-24 02:42:53,167 INFO L158 Benchmark]: TraceAbstraction took 879894.11ms. Allocated memory was 202.4MB in the beginning and 369.1MB in the end (delta: 166.7MB). Free memory was 110.8MB in the beginning and 293.1MB in the end (delta: -182.2MB). Peak memory consumption was 166.4MB. Max. memory is 8.0GB. [2023-12-24 02:42:53,169 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 202.4MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.36ms. Allocated memory is still 202.4MB. Free memory was 147.9MB in the beginning and 134.6MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.55ms. Allocated memory is still 202.4MB. Free memory was 134.6MB in the beginning and 132.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.45ms. Allocated memory is still 202.4MB. Free memory was 132.5MB in the beginning and 129.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 663.51ms. Allocated memory is still 202.4MB. Free memory was 129.7MB in the beginning and 111.5MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 879894.11ms. Allocated memory was 202.4MB in the beginning and 369.1MB in the end (delta: 166.7MB). Free memory was 110.8MB in the beginning and 293.1MB in the end (delta: -182.2MB). Peak memory consumption was 166.4MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 106 with TraceHistMax 17,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 879.8s, OverallIterations: 7, TraceHistogramMax: 17, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 182.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 734 SdHoareTripleChecker+Valid, 78.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 713 mSDsluCounter, 1386 SdHoareTripleChecker+Invalid, 73.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1008 mSDsCounter, 191 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2218 IncrementalHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 191 mSolverCounterUnsat, 378 mSDtfsCounter, 2218 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1323 GetRequests, 1126 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4825 ImplicationChecksByTransitivity, 331.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=6, InterpolantAutomatonStates: 108, 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, 6 MinimizatonAttempts, 209 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 428.6s InterpolantComputationTime, 730 NumberOfCodeBlocks, 730 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1240 ConstructedInterpolants, 11 QuantifiedInterpolants, 16843 SizeOfPredicates, 115 NumberOfNonLiveVariables, 1217 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 6117/6528 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