/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-52.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 01:53:13,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 01:53:13,352 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 01:53:13,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 01:53:13,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 01:53:13,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 01:53:13,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 01:53:13,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 01:53:13,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 01:53:13,383 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 01:53:13,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 01:53:13,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 01:53:13,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 01:53:13,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 01:53:13,385 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 01:53:13,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 01:53:13,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 01:53:13,386 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 01:53:13,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 01:53:13,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 01:53:13,387 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 01:53:13,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 01:53:13,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 01:53:13,387 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 01:53:13,387 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 01:53:13,387 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 01:53:13,388 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 01:53:13,388 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 01:53:13,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 01:53:13,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 01:53:13,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 01:53:13,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 01:53:13,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 01:53:13,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 01:53:13,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 01:53:13,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 01:53:13,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 01:53:13,390 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 01:53:13,390 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 01:53:13,390 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 01:53:13,390 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 01:53:13,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 01:53:13,390 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 01:53:13,390 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 01:53:13,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 01:53:13,391 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 01:53:13,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 01:53:13,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 01:53:13,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 01:53:13,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 01:53:13,598 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 01:53:13,598 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 01:53:13,600 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-52.i [2023-12-24 01:53:14,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 01:53:14,764 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 01:53:14,765 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-52.i [2023-12-24 01:53:14,772 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2f08f481/00fdf662e94e48f2b42295782b540354/FLAGe22d5e3bc [2023-12-24 01:53:14,789 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2f08f481/00fdf662e94e48f2b42295782b540354 [2023-12-24 01:53:14,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 01:53:14,792 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 01:53:14,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 01:53:14,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 01:53:14,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 01:53:14,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:14,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0431c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14, skipping insertion in model container [2023-12-24 01:53:14,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:14,822 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 01:53:14,916 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-52.i[915,928] [2023-12-24 01:53:14,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 01:53:14,953 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 01:53:14,962 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-52.i[915,928] [2023-12-24 01:53:14,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 01:53:14,992 INFO L206 MainTranslator]: Completed translation [2023-12-24 01:53:14,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14 WrapperNode [2023-12-24 01:53:14,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 01:53:14,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 01:53:14,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 01:53:14,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 01:53:14,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,023 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2023-12-24 01:53:15,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 01:53:15,025 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 01:53:15,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 01:53:15,025 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 01:53:15,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,035 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,043 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 01:53:15,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 01:53:15,065 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 01:53:15,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 01:53:15,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 01:53:15,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (1/1) ... [2023-12-24 01:53:15,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 01:53:15,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 01:53:15,092 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 01:53:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 01:53:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 01:53:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 01:53:15,118 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 01:53:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 01:53:15,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 01:53:15,116 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 01:53:15,184 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 01:53:15,186 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 01:53:15,398 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 01:53:15,443 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 01:53:15,444 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 01:53:15,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:53:15 BoogieIcfgContainer [2023-12-24 01:53:15,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 01:53:15,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 01:53:15,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 01:53:15,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 01:53:15,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 01:53:14" (1/3) ... [2023-12-24 01:53:15,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11790b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:53:15, skipping insertion in model container [2023-12-24 01:53:15,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:53:14" (2/3) ... [2023-12-24 01:53:15,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11790b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:53:15, skipping insertion in model container [2023-12-24 01:53:15,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:53:15" (3/3) ... [2023-12-24 01:53:15,458 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-52.i [2023-12-24 01:53:15,471 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 01:53:15,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 01:53:15,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 01:53:15,510 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;@230bc11e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 01:53:15,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 01:53:15,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 25 states have (on average 1.36) internal successors, (34), 26 states have internal predecessors, (34), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 01:53:15,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 01:53:15,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 01:53:15,534 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1] [2023-12-24 01:53:15,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 01:53:15,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 01:53:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1214595298, now seen corresponding path program 1 times [2023-12-24 01:53:15,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 01:53:15,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722825673] [2023-12-24 01:53:15,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 01:53:15,557 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 01:53:15,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 01:53:15,559 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 01:53:15,564 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 01:53:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 01:53:15,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 01:53:15,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 01:53:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 326 proven. 36 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-24 01:53:16,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 01:53:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-24 01:53:16,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 01:53:16,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722825673] [2023-12-24 01:53:16,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722825673] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 01:53:16,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 01:53:16,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-12-24 01:53:16,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558469154] [2023-12-24 01:53:16,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 01:53:16,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 01:53:16,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 01:53:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 01:53:16,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-24 01:53:16,375 INFO L87 Difference]: Start difference. First operand has 46 states, 25 states have (on average 1.36) internal successors, (34), 26 states have internal predecessors, (34), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-24 01:53:17,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 01:53:17,308 INFO L93 Difference]: Finished difference Result 197 states and 349 transitions. [2023-12-24 01:53:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 01:53:17,310 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 109 [2023-12-24 01:53:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 01:53:17,316 INFO L225 Difference]: With dead ends: 197 [2023-12-24 01:53:17,317 INFO L226 Difference]: Without dead ends: 152 [2023-12-24 01:53:17,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=390, Invalid=1170, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 01:53:17,322 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 160 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 01:53:17,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 216 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 01:53:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-24 01:53:17,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 55. [2023-12-24 01:53:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 01:53:17,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 75 transitions. [2023-12-24 01:53:17,358 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 75 transitions. Word has length 109 [2023-12-24 01:53:17,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 01:53:17,358 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 75 transitions. [2023-12-24 01:53:17,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-24 01:53:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 75 transitions. [2023-12-24 01:53:17,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 01:53:17,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 01:53:17,361 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1] [2023-12-24 01:53:17,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 01:53:17,566 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 01:53:17,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 01:53:17,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 01:53:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash -560412064, now seen corresponding path program 1 times [2023-12-24 01:53:17,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 01:53:17,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116214649] [2023-12-24 01:53:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 01:53:17,568 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 01:53:17,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 01:53:17,569 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 01:53:17,570 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 01:53:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 01:53:17,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 01:53:17,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 01:53:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 444 proven. 45 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-24 01:53:40,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 01:54:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 01:54:13,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 01:54:13,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116214649] [2023-12-24 01:54:13,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116214649] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 01:54:13,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 01:54:13,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [28] total 33 [2023-12-24 01:54:13,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263914344] [2023-12-24 01:54:13,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 01:54:13,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 01:54:13,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 01:54:13,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 01:54:13,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 01:54:13,076 INFO L87 Difference]: Start difference. First operand 55 states and 75 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 01:54:14,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 01:54:14,218 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2023-12-24 01:54:14,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 01:54:14,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 109 [2023-12-24 01:54:14,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 01:54:14,220 INFO L225 Difference]: With dead ends: 73 [2023-12-24 01:54:14,220 INFO L226 Difference]: Without dead ends: 71 [2023-12-24 01:54:14,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=253, Invalid=1153, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 01:54:14,222 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 33 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 01:54:14,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 224 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 01:54:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-24 01:54:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2023-12-24 01:54:14,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 01:54:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2023-12-24 01:54:14,229 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 109 [2023-12-24 01:54:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 01:54:14,229 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2023-12-24 01:54:14,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 01:54:14,230 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2023-12-24 01:54:14,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 01:54:14,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 01:54:14,231 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1] [2023-12-24 01:54:14,245 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 01:54:14,431 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 01:54:14,432 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 01:54:14,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 01:54:14,432 INFO L85 PathProgramCache]: Analyzing trace with hash -503153762, now seen corresponding path program 1 times [2023-12-24 01:54:14,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 01:54:14,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974491109] [2023-12-24 01:54:14,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 01:54:14,433 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 01:54:14,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 01:54:14,434 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 01:54:14,435 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 01:54:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 01:54:14,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 01:54:14,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 01:54:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 444 proven. 45 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-24 01:54:36,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 01:55:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 01:55:09,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 01:55:09,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974491109] [2023-12-24 01:55:09,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974491109] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 01:55:09,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 01:55:09,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [28] total 33 [2023-12-24 01:55:09,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660759722] [2023-12-24 01:55:09,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 01:55:09,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 01:55:09,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 01:55:09,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 01:55:09,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 01:55:09,280 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 01:55:10,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 01:55:10,375 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2023-12-24 01:55:10,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 01:55:10,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 109 [2023-12-24 01:55:10,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 01:55:10,377 INFO L225 Difference]: With dead ends: 74 [2023-12-24 01:55:10,377 INFO L226 Difference]: Without dead ends: 72 [2023-12-24 01:55:10,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=253, Invalid=1153, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 01:55:10,379 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 25 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 01:55:10,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 202 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 01:55:10,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-24 01:55:10,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2023-12-24 01:55:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 01:55:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2023-12-24 01:55:10,386 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 109 [2023-12-24 01:55:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 01:55:10,386 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2023-12-24 01:55:10,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 01:55:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2023-12-24 01:55:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 01:55:10,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 01:55:10,388 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1] [2023-12-24 01:55:10,392 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 01:55:10,591 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 01:55:10,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 01:55:10,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 01:55:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1011782609, now seen corresponding path program 1 times [2023-12-24 01:55:10,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 01:55:10,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214717889] [2023-12-24 01:55:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 01:55:10,593 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 01:55:10,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 01:55:10,594 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 01:55:10,597 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 01:55:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 01:55:10,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 01:55:10,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 01:55:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 326 proven. 36 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-24 01:55:28,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 01:56:20,867 WARN L293 SmtUtils]: Spent 7.49s on a formula simplification. DAG size of input: 212 DAG size of output: 220 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 01:56:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 01:56:27,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 01:56:27,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214717889] [2023-12-24 01:56:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214717889] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 01:56:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 01:56:27,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-12-24 01:56:27,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724267334] [2023-12-24 01:56:27,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 01:56:27,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 01:56:27,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 01:56:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 01:56:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-12-24 01:56:27,829 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 01:56:33,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 01:56:33,422 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2023-12-24 01:56:33,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 01:56:33,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 110 [2023-12-24 01:56:33,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 01:56:33,425 INFO L225 Difference]: With dead ends: 83 [2023-12-24 01:56:33,425 INFO L226 Difference]: Without dead ends: 81 [2023-12-24 01:56:33,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=71, Invalid=270, Unknown=1, NotChecked=0, Total=342 [2023-12-24 01:56:33,426 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 23 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 01:56:33,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 216 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 01:56:33,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-24 01:56:33,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 60. [2023-12-24 01:56:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 01:56:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2023-12-24 01:56:33,434 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 110 [2023-12-24 01:56:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 01:56:33,434 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2023-12-24 01:56:33,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 01:56:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2023-12-24 01:56:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 01:56:33,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 01:56:33,439 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1] [2023-12-24 01:56:33,444 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 01:56:33,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 01:56:33,645 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 01:56:33,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 01:56:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1011842191, now seen corresponding path program 1 times [2023-12-24 01:56:33,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 01:56:33,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512703192] [2023-12-24 01:56:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 01:56:33,646 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 01:56:33,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 01:56:33,647 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 01:56:33,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 01:56:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 01:56:33,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 01:56:33,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 01:56:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 326 proven. 36 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-24 01:56:52,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 01:57:44,367 WARN L293 SmtUtils]: Spent 7.49s on a formula simplification. DAG size of input: 219 DAG size of output: 227 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 01:57:55,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 01:57:55,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512703192] [2023-12-24 01:57:55,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512703192] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 01:57:55,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [355242013] [2023-12-24 01:57:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 01:57:55,148 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 01:57:55,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 01:57:55,149 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 01:57:55,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 01:57:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 01:57:55,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 01:57:55,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 01:58:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 01:58:05,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 01:58:05,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [355242013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 01:58:05,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 01:58:05,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2023-12-24 01:58:05,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919469535] [2023-12-24 01:58:05,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 01:58:05,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 01:58:05,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 01:58:05,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 01:58:05,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-12-24 01:58:05,709 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 01:58:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 01:58:06,117 INFO L93 Difference]: Finished difference Result 77 states and 99 transitions. [2023-12-24 01:58:06,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 01:58:06,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 110 [2023-12-24 01:58:06,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 01:58:06,119 INFO L225 Difference]: With dead ends: 77 [2023-12-24 01:58:06,119 INFO L226 Difference]: Without dead ends: 75 [2023-12-24 01:58:06,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 206 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-12-24 01:58:06,120 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 29 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 01:58:06,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 176 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 01:58:06,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-24 01:58:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 60. [2023-12-24 01:58:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 01:58:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2023-12-24 01:58:06,128 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 110 [2023-12-24 01:58:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 01:58:06,129 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2023-12-24 01:58:06,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 01:58:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2023-12-24 01:58:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 01:58:06,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 01:58:06,130 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1] [2023-12-24 01:58:06,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-24 01:58:06,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 01:58:06,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 01:58:06,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 01:58:06,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 01:58:06,535 INFO L85 PathProgramCache]: Analyzing trace with hash 763224753, now seen corresponding path program 1 times [2023-12-24 01:58:06,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 01:58:06,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539573867] [2023-12-24 01:58:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 01:58:06,535 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 01:58:06,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 01:58:06,536 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 01:58:06,537 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 01:58:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 01:58:06,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 01:58:06,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 01:58:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 326 proven. 36 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-24 01:58:24,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 01:59:19,613 WARN L293 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 301 DAG size of output: 313 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 01:59:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 01:59:26,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 01:59:26,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539573867] [2023-12-24 01:59:26,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539573867] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 01:59:26,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 01:59:26,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-12-24 01:59:26,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845150970] [2023-12-24 01:59:26,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 01:59:26,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 01:59:26,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 01:59:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 01:59:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-12-24 01:59:26,981 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 01:59:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 01:59:33,956 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2023-12-24 01:59:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 01:59:33,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 110 [2023-12-24 01:59:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 01:59:33,959 INFO L225 Difference]: With dead ends: 84 [2023-12-24 01:59:33,959 INFO L226 Difference]: Without dead ends: 82 [2023-12-24 01:59:33,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-12-24 01:59:33,960 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 22 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 01:59:33,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 214 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 01:59:33,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-24 01:59:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 61. [2023-12-24 01:59:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 01:59:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2023-12-24 01:59:33,969 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 110 [2023-12-24 01:59:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 01:59:33,969 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2023-12-24 01:59:33,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 01:59:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2023-12-24 01:59:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 01:59:33,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 01:59:33,971 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1] [2023-12-24 01:59:33,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-24 01:59:34,174 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 01:59:34,175 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 01:59:34,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 01:59:34,175 INFO L85 PathProgramCache]: Analyzing trace with hash 763165171, now seen corresponding path program 1 times [2023-12-24 01:59:34,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 01:59:34,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109514519] [2023-12-24 01:59:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 01:59:34,175 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 01:59:34,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 01:59:34,176 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 01:59:34,177 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 01:59:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 01:59:34,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 01:59:34,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 01:59:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 326 proven. 36 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-24 01:59:53,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:00:44,943 WARN L293 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 219 DAG size of output: 227 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 02:00:56,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:00:56,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109514519] [2023-12-24 02:00:56,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109514519] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 02:00:56,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1675568681] [2023-12-24 02:00:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:00:56,114 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 02:00:56,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 02:00:56,116 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 02:00:56,119 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 02:00:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:00:56,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 02:00:56,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:01:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 02:01:06,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 02:01:06,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1675568681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 02:01:06,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 02:01:06,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2023-12-24 02:01:06,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370608677] [2023-12-24 02:01:06,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:01:06,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 02:01:06,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:01:06,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 02:01:06,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-12-24 02:01:06,652 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 02:01:07,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:01:07,127 INFO L93 Difference]: Finished difference Result 75 states and 97 transitions. [2023-12-24 02:01:07,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 02:01:07,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 110 [2023-12-24 02:01:07,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:01:07,129 INFO L225 Difference]: With dead ends: 75 [2023-12-24 02:01:07,129 INFO L226 Difference]: Without dead ends: 73 [2023-12-24 02:01:07,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 206 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-12-24 02:01:07,130 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 23 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 02:01:07,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 227 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 02:01:07,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-24 02:01:07,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 58. [2023-12-24 02:01:07,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 02:01:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2023-12-24 02:01:07,138 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 79 transitions. Word has length 110 [2023-12-24 02:01:07,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:01:07,138 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 79 transitions. [2023-12-24 02:01:07,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 02:01:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2023-12-24 02:01:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 02:01:07,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:01:07,140 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1] [2023-12-24 02:01:07,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 02:01:07,346 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 02:01:07,542 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 02:01:07,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:01:07,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:01:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash -202435983, now seen corresponding path program 1 times [2023-12-24 02:01:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:01:07,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983683285] [2023-12-24 02:01:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:01:07,544 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 02:01:07,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:01:07,545 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 02:01:07,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 02:01:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:01:07,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 02:01:07,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:01:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 444 proven. 45 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-24 02:01:19,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:02:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 02:02:00,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:02:00,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983683285] [2023-12-24 02:02:00,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983683285] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 02:02:00,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 02:02:00,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [29] total 35 [2023-12-24 02:02:00,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032459765] [2023-12-24 02:02:00,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:02:00,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 02:02:00,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:02:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 02:02:00,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=948, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 02:02:00,685 INFO L87 Difference]: Start difference. First operand 58 states and 79 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 02:02:02,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:02:02,046 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2023-12-24 02:02:02,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 02:02:02,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 110 [2023-12-24 02:02:02,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:02:02,048 INFO L225 Difference]: With dead ends: 85 [2023-12-24 02:02:02,048 INFO L226 Difference]: Without dead ends: 83 [2023-12-24 02:02:02,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=298, Invalid=1342, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 02:02:02,049 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 36 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 02:02:02,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 222 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 02:02:02,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-24 02:02:02,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2023-12-24 02:02:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 02:02:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 84 transitions. [2023-12-24 02:02:02,058 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 84 transitions. Word has length 110 [2023-12-24 02:02:02,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:02:02,058 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 84 transitions. [2023-12-24 02:02:02,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 02:02:02,058 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 84 transitions. [2023-12-24 02:02:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 02:02:02,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:02:02,059 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1] [2023-12-24 02:02:02,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 02:02:02,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 02:02:02,264 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:02:02,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:02:02,264 INFO L85 PathProgramCache]: Analyzing trace with hash -202495565, now seen corresponding path program 1 times [2023-12-24 02:02:02,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:02:02,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215507223] [2023-12-24 02:02:02,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:02:02,265 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 02:02:02,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:02:02,266 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 02:02:02,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 02:02:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:02:02,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 02:02:02,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:02:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 444 proven. 45 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-24 02:02:16,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:02:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 02:02:58,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:02:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215507223] [2023-12-24 02:02:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215507223] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 02:02:58,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 02:02:58,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [29] total 35 [2023-12-24 02:02:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380633096] [2023-12-24 02:02:58,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:02:58,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 02:02:58,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:02:58,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 02:02:58,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=953, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 02:02:58,897 INFO L87 Difference]: Start difference. First operand 61 states and 84 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 02:03:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:03:00,575 INFO L93 Difference]: Finished difference Result 77 states and 101 transitions. [2023-12-24 02:03:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 02:03:00,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 110 [2023-12-24 02:03:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:03:00,577 INFO L225 Difference]: With dead ends: 77 [2023-12-24 02:03:00,577 INFO L226 Difference]: Without dead ends: 75 [2023-12-24 02:03:00,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=288, Invalid=1352, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 02:03:00,578 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 31 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 02:03:00,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 242 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 02:03:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-24 02:03:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 60. [2023-12-24 02:03:00,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 02:03:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2023-12-24 02:03:00,592 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 110 [2023-12-24 02:03:00,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:03:00,593 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2023-12-24 02:03:00,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 02:03:00,593 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2023-12-24 02:03:00,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 02:03:00,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:03:00,594 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1] [2023-12-24 02:03:00,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-24 02:03:00,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 02:03:00,800 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:03:00,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:03:00,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1572571379, now seen corresponding path program 1 times [2023-12-24 02:03:00,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:03:00,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823118048] [2023-12-24 02:03:00,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:03:00,801 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 02:03:00,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:03:00,802 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 02:03:00,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 02:03:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:03:01,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 02:03:01,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:03:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 444 proven. 45 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-24 02:03:13,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:03:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 02:03:48,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:03:48,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823118048] [2023-12-24 02:03:48,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823118048] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 02:03:48,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 02:03:48,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [29] total 35 [2023-12-24 02:03:48,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573123902] [2023-12-24 02:03:48,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:03:48,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 02:03:48,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:03:48,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 02:03:48,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=948, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 02:03:48,713 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 02:03:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:03:50,175 INFO L93 Difference]: Finished difference Result 81 states and 104 transitions. [2023-12-24 02:03:50,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 02:03:50,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 110 [2023-12-24 02:03:50,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:03:50,177 INFO L225 Difference]: With dead ends: 81 [2023-12-24 02:03:50,177 INFO L226 Difference]: Without dead ends: 79 [2023-12-24 02:03:50,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=298, Invalid=1342, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 02:03:50,178 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 27 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 02:03:50,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 230 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 02:03:50,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-24 02:03:50,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2023-12-24 02:03:50,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 02:03:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2023-12-24 02:03:50,186 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 110 [2023-12-24 02:03:50,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:03:50,186 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2023-12-24 02:03:50,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 02:03:50,186 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2023-12-24 02:03:50,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-24 02:03:50,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:03:50,187 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1] [2023-12-24 02:03:50,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 02:03:50,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 02:03:50,396 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:03:50,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:03:50,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1572511797, now seen corresponding path program 1 times [2023-12-24 02:03:50,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:03:50,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524515333] [2023-12-24 02:03:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:03:50,397 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 02:03:50,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:03:50,398 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 02:03:50,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 02:03:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:03:50,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 02:03:50,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:04:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 444 proven. 45 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-24 02:04:04,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:04:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 02:04:48,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:04:48,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524515333] [2023-12-24 02:04:48,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524515333] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 02:04:48,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 02:04:48,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [29] total 35 [2023-12-24 02:04:48,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260964767] [2023-12-24 02:04:48,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:04:48,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 02:04:48,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:04:48,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 02:04:48,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=953, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 02:04:48,350 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 02:04:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:04:50,261 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2023-12-24 02:04:50,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 02:04:50,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 110 [2023-12-24 02:04:50,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:04:50,263 INFO L225 Difference]: With dead ends: 73 [2023-12-24 02:04:50,263 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 02:04:50,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=288, Invalid=1352, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 02:04:50,264 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 23 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 02:04:50,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 218 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 02:04:50,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 02:04:50,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 02:04:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 02:04:50,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 02:04:50,265 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 110 [2023-12-24 02:04:50,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:04:50,265 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 02:04:50,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 02:04:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 02:04:50,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 02:04:50,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 02:04:50,280 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 (14)] Ended with exit code 0 [2023-12-24 02:04:50,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 02:04:50,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 02:07:46,533 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 02:07:46,555 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-10-9-7-9-15-9-15-9-15-9-12-9-9-9-6-9-4-9-4-9-4-8-3-4-3-3-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ∧-59-9-17-9-15-9-15-9-15-9-12-9-9-9-6-9-4-9-4-9-4-8-2-4-2-3-2-3-1 context. [2023-12-24 02:07:46,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 02:07:46,556 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 02:07:46,557 INFO L158 Benchmark]: Toolchain (without parser) took 871765.57ms. Allocated memory was 185.6MB in the beginning and 1.2GB in the end (delta: 969.9MB). Free memory was 125.9MB in the beginning and 611.9MB in the end (delta: -485.9MB). Peak memory consumption was 484.9MB. Max. memory is 8.0GB. [2023-12-24 02:07:46,559 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 185.6MB. Free memory is still 133.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 02:07:46,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.90ms. Allocated memory is still 185.6MB. Free memory was 125.6MB in the beginning and 112.4MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-24 02:07:46,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.41ms. Allocated memory is still 185.6MB. Free memory was 112.4MB in the beginning and 110.6MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-24 02:07:46,560 INFO L158 Benchmark]: Boogie Preprocessor took 39.34ms. Allocated memory is still 185.6MB. Free memory was 110.6MB in the beginning and 107.9MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 02:07:46,561 INFO L158 Benchmark]: RCFGBuilder took 386.89ms. Allocated memory was 185.6MB in the beginning and 283.1MB in the end (delta: 97.5MB). Free memory was 107.6MB in the beginning and 241.8MB in the end (delta: -134.2MB). Peak memory consumption was 16.6MB. Max. memory is 8.0GB. [2023-12-24 02:07:46,561 INFO L158 Benchmark]: TraceAbstraction took 871103.66ms. Allocated memory was 283.1MB in the beginning and 1.2GB in the end (delta: 872.4MB). Free memory was 241.3MB in the beginning and 611.9MB in the end (delta: -370.5MB). Peak memory consumption was 501.9MB. Max. memory is 8.0GB. [2023-12-24 02:07:46,562 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 185.6MB. Free memory is still 133.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.90ms. Allocated memory is still 185.6MB. Free memory was 125.6MB in the beginning and 112.4MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.41ms. Allocated memory is still 185.6MB. Free memory was 112.4MB in the beginning and 110.6MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.34ms. Allocated memory is still 185.6MB. Free memory was 110.6MB in the beginning and 107.9MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 386.89ms. Allocated memory was 185.6MB in the beginning and 283.1MB in the end (delta: 97.5MB). Free memory was 107.6MB in the beginning and 241.8MB in the end (delta: -134.2MB). Peak memory consumption was 16.6MB. Max. memory is 8.0GB. * TraceAbstraction took 871103.66ms. Allocated memory was 283.1MB in the beginning and 1.2GB in the end (delta: 872.4MB). Free memory was 241.3MB in the beginning and 611.9MB in the end (delta: -370.5MB). Peak memory consumption was 501.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-3-4-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-2-4-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown