/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/reducercommutativity/max40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:54:13,740 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:54:13,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 06:54:13,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:54:13,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:54:13,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:54:13,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:54:13,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:54:13,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:54:13,864 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:54:13,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:54:13,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:54:13,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:54:13,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:54:13,866 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:54:13,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:54:13,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:54:13,867 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:54:13,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:54:13,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:54:13,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:54:13,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:54:13,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:54:13,875 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 06:54:13,876 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 06:54:13,876 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:54:13,876 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 06:54:13,876 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:54:13,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:54:13,877 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:54:13,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:54:13,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:54:13,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:54:13,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:54:13,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:54:13,879 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:54:13,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:54:13,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:54:13,879 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 06:54:13,879 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 06:54:13,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:54:13,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:54:13,880 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:54:13,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:54:13,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:54:13,881 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 06:54:13,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 06:54:14,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:54:14,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:54:14,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:54:14,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:54:14,136 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:54:14,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max40-1.i [2023-12-16 06:54:15,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:54:15,412 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:54:15,412 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max40-1.i [2023-12-16 06:54:15,418 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744507e8d/5c28581ec74f4001b9b2cc4d17919b30/FLAG21dd59366 [2023-12-16 06:54:15,429 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744507e8d/5c28581ec74f4001b9b2cc4d17919b30 [2023-12-16 06:54:15,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:54:15,433 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:54:15,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:54:15,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:54:15,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:54:15,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d68359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15, skipping insertion in model container [2023-12-16 06:54:15,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,460 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:54:15,584 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max40-1.i[1290,1303] [2023-12-16 06:54:15,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:54:15,596 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:54:15,620 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max40-1.i[1290,1303] [2023-12-16 06:54:15,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:54:15,641 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:54:15,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15 WrapperNode [2023-12-16 06:54:15,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:54:15,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:54:15,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:54:15,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:54:15,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,670 INFO L138 Inliner]: procedures = 18, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2023-12-16 06:54:15,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:54:15,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:54:15,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:54:15,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:54:15,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,694 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2023-12-16 06:54:15,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:54:15,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:54:15,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:54:15,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:54:15,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (1/1) ... [2023-12-16 06:54:15,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:54:15,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:54:15,749 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) [2023-12-16 06:54:15,769 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 [2023-12-16 06:54:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:54:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure max [2023-12-16 06:54:15,780 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2023-12-16 06:54:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 06:54:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 06:54:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 06:54:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 06:54:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 06:54:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:54:15,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:54:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 06:54:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 06:54:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 06:54:15,844 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:54:15,845 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:54:15,992 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:54:16,046 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:54:16,046 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 06:54:16,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:54:16 BoogieIcfgContainer [2023-12-16 06:54:16,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:54:16,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:54:16,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:54:16,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:54:16,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:54:15" (1/3) ... [2023-12-16 06:54:16,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22487499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:54:16, skipping insertion in model container [2023-12-16 06:54:16,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:54:15" (2/3) ... [2023-12-16 06:54:16,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22487499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:54:16, skipping insertion in model container [2023-12-16 06:54:16,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:54:16" (3/3) ... [2023-12-16 06:54:16,065 INFO L112 eAbstractionObserver]: Analyzing ICFG max40-1.i [2023-12-16 06:54:16,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:54:16,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:54:16,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:54:16,115 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;@20d2302d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:54:16,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:54:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 06:54:16,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:16,126 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:16,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:16,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash 548279552, now seen corresponding path program 1 times [2023-12-16 06:54:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:16,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320308879] [2023-12-16 06:54:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:54:16,142 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 [2023-12-16 06:54:16,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:16,145 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) [2023-12-16 06:54:16,164 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 [2023-12-16 06:54:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:54:16,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 06:54:16,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 06:54:16,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:54:16,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:16,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320308879] [2023-12-16 06:54:16,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320308879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:54:16,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:54:16,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:54:16,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673682741] [2023-12-16 06:54:16,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:54:16,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 06:54:16,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 06:54:16,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:54:16,343 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 06:54:16,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:16,386 INFO L93 Difference]: Finished difference Result 42 states and 61 transitions. [2023-12-16 06:54:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 06:54:16,389 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-12-16 06:54:16,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:16,395 INFO L225 Difference]: With dead ends: 42 [2023-12-16 06:54:16,395 INFO L226 Difference]: Without dead ends: 20 [2023-12-16 06:54:16,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:54:16,403 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:16,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:54:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-16 06:54:16,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-16 06:54:16,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2023-12-16 06:54:16,438 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 25 [2023-12-16 06:54:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:16,438 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2023-12-16 06:54:16,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 06:54:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2023-12-16 06:54:16,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 06:54:16,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:16,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:16,454 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 [2023-12-16 06:54:16,644 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 [2023-12-16 06:54:16,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:16,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:16,645 INFO L85 PathProgramCache]: Analyzing trace with hash -419783731, now seen corresponding path program 1 times [2023-12-16 06:54:16,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:16,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647912864] [2023-12-16 06:54:16,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:54:16,646 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 [2023-12-16 06:54:16,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:16,648 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) [2023-12-16 06:54:16,652 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 [2023-12-16 06:54:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:54:16,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:54:16,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 06:54:16,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:54:16,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:16,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647912864] [2023-12-16 06:54:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647912864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:54:16,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:54:16,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:54:16,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15346059] [2023-12-16 06:54:16,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:54:16,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:54:16,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:16,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:54:16,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:54:16,751 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 06:54:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:16,779 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-12-16 06:54:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:54:16,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-12-16 06:54:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:16,781 INFO L225 Difference]: With dead ends: 39 [2023-12-16 06:54:16,781 INFO L226 Difference]: Without dead ends: 21 [2023-12-16 06:54:16,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:54:16,782 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:16,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:54:16,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-16 06:54:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-16 06:54:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:16,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-12-16 06:54:16,792 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 25 [2023-12-16 06:54:16,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:16,793 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-12-16 06:54:16,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 06:54:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-16 06:54:16,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 06:54:16,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:16,795 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:16,800 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 [2023-12-16 06:54:16,997 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 [2023-12-16 06:54:16,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:16,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash 836676700, now seen corresponding path program 1 times [2023-12-16 06:54:16,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:16,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340593912] [2023-12-16 06:54:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:54:16,999 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 [2023-12-16 06:54:16,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:17,001 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) [2023-12-16 06:54:17,012 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 [2023-12-16 06:54:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:54:17,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:54:17,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 06:54:17,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 06:54:17,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:17,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340593912] [2023-12-16 06:54:17,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340593912] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:17,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:17,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2023-12-16 06:54:17,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412487094] [2023-12-16 06:54:17,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:17,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:54:17,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:17,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:54:17,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:54:17,157 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:54:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:17,215 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2023-12-16 06:54:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:54:17,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2023-12-16 06:54:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:17,217 INFO L225 Difference]: With dead ends: 42 [2023-12-16 06:54:17,217 INFO L226 Difference]: Without dead ends: 24 [2023-12-16 06:54:17,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:54:17,221 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:17,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:54:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-16 06:54:17,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-16 06:54:17,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-12-16 06:54:17,228 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 26 [2023-12-16 06:54:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:17,228 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-12-16 06:54:17,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:54:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-12-16 06:54:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 06:54:17,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:17,230 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:17,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 06:54:17,432 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 [2023-12-16 06:54:17,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:17,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:17,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2017343603, now seen corresponding path program 2 times [2023-12-16 06:54:17,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:17,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074694971] [2023-12-16 06:54:17,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:54:17,435 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 [2023-12-16 06:54:17,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:17,436 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) [2023-12-16 06:54:17,439 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 [2023-12-16 06:54:17,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 06:54:17,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:54:17,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:54:17,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 06:54:17,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:54:17,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:17,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074694971] [2023-12-16 06:54:17,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074694971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:54:17,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:54:17,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:54:17,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117871539] [2023-12-16 06:54:17,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:54:17,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:54:17,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:54:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:54:17,522 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 06:54:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:17,561 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2023-12-16 06:54:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:54:17,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2023-12-16 06:54:17,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:17,565 INFO L225 Difference]: With dead ends: 43 [2023-12-16 06:54:17,565 INFO L226 Difference]: Without dead ends: 27 [2023-12-16 06:54:17,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:54:17,570 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:17,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:54:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-16 06:54:17,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-12-16 06:54:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-12-16 06:54:17,583 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 29 [2023-12-16 06:54:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:17,583 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-12-16 06:54:17,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 06:54:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-12-16 06:54:17,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 06:54:17,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:17,584 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:17,594 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 [2023-12-16 06:54:17,794 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 [2023-12-16 06:54:17,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:17,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:17,795 INFO L85 PathProgramCache]: Analyzing trace with hash -655280532, now seen corresponding path program 1 times [2023-12-16 06:54:17,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:17,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517040279] [2023-12-16 06:54:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:54:17,796 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 [2023-12-16 06:54:17,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:17,797 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) [2023-12-16 06:54:17,798 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 [2023-12-16 06:54:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:54:17,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:54:17,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 06:54:17,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 06:54:18,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:18,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517040279] [2023-12-16 06:54:18,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517040279] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:18,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:18,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-16 06:54:18,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566162101] [2023-12-16 06:54:18,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:18,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 06:54:18,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:18,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 06:54:18,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:54:18,038 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:54:18,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:18,250 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2023-12-16 06:54:18,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 06:54:18,251 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2023-12-16 06:54:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:18,252 INFO L225 Difference]: With dead ends: 50 [2023-12-16 06:54:18,252 INFO L226 Difference]: Without dead ends: 31 [2023-12-16 06:54:18,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:54:18,253 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:18,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:54:18,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-16 06:54:18,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-16 06:54:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-12-16 06:54:18,259 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 38 [2023-12-16 06:54:18,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:18,260 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-12-16 06:54:18,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:54:18,260 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-12-16 06:54:18,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 06:54:18,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:18,261 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:18,264 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 [2023-12-16 06:54:18,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:54:18,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:18,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1109855436, now seen corresponding path program 2 times [2023-12-16 06:54:18,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:18,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124464274] [2023-12-16 06:54:18,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:54:18,466 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 [2023-12-16 06:54:18,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:18,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:54:18,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 06:54:18,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:54:18,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:54:18,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 06:54:18,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 06:54:18,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 06:54:19,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:19,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124464274] [2023-12-16 06:54:19,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124464274] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:19,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:19,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2023-12-16 06:54:19,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047255235] [2023-12-16 06:54:19,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:19,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 06:54:19,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:19,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 06:54:19,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 06:54:19,097 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:54:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:19,987 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2023-12-16 06:54:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 06:54:19,988 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2023-12-16 06:54:19,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:19,988 INFO L225 Difference]: With dead ends: 62 [2023-12-16 06:54:19,988 INFO L226 Difference]: Without dead ends: 43 [2023-12-16 06:54:19,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 06:54:19,990 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:19,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 290 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:54:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-16 06:54:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-16 06:54:19,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-12-16 06:54:19,997 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 44 [2023-12-16 06:54:19,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:19,997 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-12-16 06:54:19,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:54:19,997 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-12-16 06:54:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 06:54:19,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:19,999 INFO L195 NwaCegarLoop]: trace histogram [22, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:20,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 06:54:20,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:54:20,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:20,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:20,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1245585012, now seen corresponding path program 3 times [2023-12-16 06:54:20,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928688287] [2023-12-16 06:54:20,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:54:20,204 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 [2023-12-16 06:54:20,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:20,205 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) [2023-12-16 06:54:20,206 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 [2023-12-16 06:54:20,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 06:54:20,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:54:20,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:54:20,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-16 06:54:20,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:54:20,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:20,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928688287] [2023-12-16 06:54:20,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928688287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:54:20,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:54:20,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:54:20,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474901275] [2023-12-16 06:54:20,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:54:20,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:54:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:20,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:54:20,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:54:20,312 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 06:54:20,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:20,339 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2023-12-16 06:54:20,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:54:20,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2023-12-16 06:54:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:20,342 INFO L225 Difference]: With dead ends: 57 [2023-12-16 06:54:20,342 INFO L226 Difference]: Without dead ends: 44 [2023-12-16 06:54:20,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:54:20,344 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:20,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:54:20,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-16 06:54:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-16 06:54:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-12-16 06:54:20,357 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 56 [2023-12-16 06:54:20,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:20,359 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-12-16 06:54:20,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 06:54:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-12-16 06:54:20,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 06:54:20,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:20,361 INFO L195 NwaCegarLoop]: trace histogram [22, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:20,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 06:54:20,564 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 [2023-12-16 06:54:20,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:20,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:20,565 INFO L85 PathProgramCache]: Analyzing trace with hash -424273138, now seen corresponding path program 1 times [2023-12-16 06:54:20,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:20,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921853178] [2023-12-16 06:54:20,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:54:20,566 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 [2023-12-16 06:54:20,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:20,569 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) [2023-12-16 06:54:20,570 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 (9)] Waiting until timeout for monitored process [2023-12-16 06:54:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:54:20,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 06:54:20,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 06:54:21,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 06:54:22,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:22,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921853178] [2023-12-16 06:54:22,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921853178] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:22,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:22,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 48 [2023-12-16 06:54:22,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018953721] [2023-12-16 06:54:22,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:22,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 06:54:22,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:22,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 06:54:22,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 06:54:22,214 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 48 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:54:25,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:25,262 INFO L93 Difference]: Finished difference Result 82 states and 109 transitions. [2023-12-16 06:54:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-16 06:54:25,263 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2023-12-16 06:54:25,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:25,264 INFO L225 Difference]: With dead ends: 82 [2023-12-16 06:54:25,264 INFO L226 Difference]: Without dead ends: 62 [2023-12-16 06:54:25,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1279, Invalid=2753, Unknown=0, NotChecked=0, Total=4032 [2023-12-16 06:54:25,266 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:25,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 452 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 06:54:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-16 06:54:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-16 06:54:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 57 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:25,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2023-12-16 06:54:25,274 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 57 [2023-12-16 06:54:25,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:25,275 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2023-12-16 06:54:25,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:54:25,275 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2023-12-16 06:54:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:54:25,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:25,276 INFO L195 NwaCegarLoop]: trace histogram [40, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:25,282 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 [2023-12-16 06:54:25,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:54:25,480 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:25,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:25,481 INFO L85 PathProgramCache]: Analyzing trace with hash -967681042, now seen corresponding path program 2 times [2023-12-16 06:54:25,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:25,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107903048] [2023-12-16 06:54:25,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:54:25,481 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 [2023-12-16 06:54:25,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:25,482 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:54:25,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 06:54:25,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:54:25,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:54:25,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:54:25,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2023-12-16 06:54:25,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2023-12-16 06:54:25,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:25,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107903048] [2023-12-16 06:54:25,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107903048] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:25,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:25,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 06:54:25,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313233996] [2023-12-16 06:54:25,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:25,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:54:25,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:54:25,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:54:25,678 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 06:54:25,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:25,737 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2023-12-16 06:54:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:54:25,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 75 [2023-12-16 06:54:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:25,738 INFO L225 Difference]: With dead ends: 89 [2023-12-16 06:54:25,738 INFO L226 Difference]: Without dead ends: 71 [2023-12-16 06:54:25,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:54:25,739 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:25,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 82 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:54:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-16 06:54:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-12-16 06:54:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.106060606060606) internal successors, (73), 66 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2023-12-16 06:54:25,747 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 75 [2023-12-16 06:54:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:25,747 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2023-12-16 06:54:25,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 06:54:25,747 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2023-12-16 06:54:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 06:54:25,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:25,748 INFO L195 NwaCegarLoop]: trace histogram [40, 12, 12, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:25,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 06:54:25,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:54:25,954 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:25,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:25,954 INFO L85 PathProgramCache]: Analyzing trace with hash 910691663, now seen corresponding path program 3 times [2023-12-16 06:54:25,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:25,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532080083] [2023-12-16 06:54:25,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:54:25,955 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 [2023-12-16 06:54:25,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:25,956 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) [2023-12-16 06:54:25,972 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 [2023-12-16 06:54:26,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 06:54:26,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:54:26,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:54:26,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 120 proven. 1 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-16 06:54:26,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-12-16 06:54:26,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:26,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532080083] [2023-12-16 06:54:26,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532080083] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:26,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:26,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 06:54:26,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838191431] [2023-12-16 06:54:26,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:26,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:54:26,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:26,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:54:26,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:54:26,130 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 06:54:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:26,177 INFO L93 Difference]: Finished difference Result 96 states and 111 transitions. [2023-12-16 06:54:26,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:54:26,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 102 [2023-12-16 06:54:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:26,178 INFO L225 Difference]: With dead ends: 96 [2023-12-16 06:54:26,178 INFO L226 Difference]: Without dead ends: 74 [2023-12-16 06:54:26,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:54:26,179 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:26,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:54:26,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-16 06:54:26,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-12-16 06:54:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 69 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2023-12-16 06:54:26,187 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 102 [2023-12-16 06:54:26,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:26,187 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2023-12-16 06:54:26,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 06:54:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2023-12-16 06:54:26,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-16 06:54:26,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:26,189 INFO L195 NwaCegarLoop]: trace histogram [40, 12, 12, 12, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:26,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 06:54:26,392 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 [2023-12-16 06:54:26,392 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:26,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:26,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2118689165, now seen corresponding path program 4 times [2023-12-16 06:54:26,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:26,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029297168] [2023-12-16 06:54:26,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 06:54:26,393 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 [2023-12-16 06:54:26,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:26,394 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) [2023-12-16 06:54:26,400 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 [2023-12-16 06:54:26,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 06:54:26,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:54:26,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:54:26,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 116 proven. 22 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2023-12-16 06:54:26,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2023-12-16 06:54:26,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:26,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029297168] [2023-12-16 06:54:26,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029297168] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:26,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:26,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 06:54:26,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828250949] [2023-12-16 06:54:26,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:26,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 06:54:26,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 06:54:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:54:26,766 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 06:54:26,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:26,948 INFO L93 Difference]: Finished difference Result 122 states and 151 transitions. [2023-12-16 06:54:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 06:54:26,949 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 105 [2023-12-16 06:54:26,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:26,949 INFO L225 Difference]: With dead ends: 122 [2023-12-16 06:54:26,950 INFO L226 Difference]: Without dead ends: 92 [2023-12-16 06:54:26,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:54:26,951 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 39 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:26,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 121 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:54:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-16 06:54:26,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-12-16 06:54:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 87 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2023-12-16 06:54:26,959 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 105 [2023-12-16 06:54:26,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:26,959 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2023-12-16 06:54:26,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 06:54:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2023-12-16 06:54:26,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-16 06:54:26,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:26,960 INFO L195 NwaCegarLoop]: trace histogram [40, 30, 30, 30, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:26,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 06:54:27,167 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 [2023-12-16 06:54:27,167 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:27,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1256102611, now seen corresponding path program 5 times [2023-12-16 06:54:27,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:27,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205695232] [2023-12-16 06:54:27,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 06:54:27,168 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 [2023-12-16 06:54:27,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:27,169 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) [2023-12-16 06:54:27,170 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 [2023-12-16 06:54:28,931 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2023-12-16 06:54:28,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:54:28,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 06:54:28,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2237 backedges. 644 proven. 145 refuted. 0 times theorem prover too weak. 1448 trivial. 0 not checked. [2023-12-16 06:54:29,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2237 backedges. 0 proven. 791 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2023-12-16 06:54:29,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:29,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205695232] [2023-12-16 06:54:29,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205695232] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:29,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:29,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2023-12-16 06:54:29,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010220214] [2023-12-16 06:54:29,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:29,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 06:54:29,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:29,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 06:54:29,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-12-16 06:54:29,602 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 06:54:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:30,802 INFO L93 Difference]: Finished difference Result 176 states and 229 transitions. [2023-12-16 06:54:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-16 06:54:30,803 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 159 [2023-12-16 06:54:30,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:30,804 INFO L225 Difference]: With dead ends: 176 [2023-12-16 06:54:30,804 INFO L226 Difference]: Without dead ends: 128 [2023-12-16 06:54:30,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 06:54:30,805 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 176 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:30,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 313 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 06:54:30,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-16 06:54:30,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-12-16 06:54:30,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.2032520325203253) internal successors, (148), 123 states have internal predecessors, (148), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 154 transitions. [2023-12-16 06:54:30,815 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 154 transitions. Word has length 159 [2023-12-16 06:54:30,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:30,815 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 154 transitions. [2023-12-16 06:54:30,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 06:54:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 154 transitions. [2023-12-16 06:54:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-16 06:54:30,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:30,818 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 40, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:30,833 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 [2023-12-16 06:54:31,030 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 [2023-12-16 06:54:31,031 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:31,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:31,031 INFO L85 PathProgramCache]: Analyzing trace with hash 297960557, now seen corresponding path program 6 times [2023-12-16 06:54:31,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:31,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452472062] [2023-12-16 06:54:31,032 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 06:54:31,032 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 [2023-12-16 06:54:31,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:31,033 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) [2023-12-16 06:54:31,034 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 [2023-12-16 06:54:31,282 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-16 06:54:31,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:54:31,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:54:31,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 3000 proven. 10 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-16 06:54:31,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7465 trivial. 0 not checked. [2023-12-16 06:54:31,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:31,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452472062] [2023-12-16 06:54:31,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452472062] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:31,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:31,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 06:54:31,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105383925] [2023-12-16 06:54:31,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:31,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 06:54:31,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:31,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 06:54:31,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:54:31,416 INFO L87 Difference]: Start difference. First operand 128 states and 154 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 06:54:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:31,585 INFO L93 Difference]: Finished difference Result 210 states and 264 transitions. [2023-12-16 06:54:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 06:54:31,588 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 267 [2023-12-16 06:54:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:31,592 INFO L225 Difference]: With dead ends: 210 [2023-12-16 06:54:31,592 INFO L226 Difference]: Without dead ends: 134 [2023-12-16 06:54:31,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:54:31,593 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:31,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:54:31,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-16 06:54:31,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-12-16 06:54:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.193798449612403) internal successors, (154), 129 states have internal predecessors, (154), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2023-12-16 06:54:31,603 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 267 [2023-12-16 06:54:31,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:31,603 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2023-12-16 06:54:31,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 06:54:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2023-12-16 06:54:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-16 06:54:31,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:31,606 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 40, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:31,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 06:54:31,806 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 [2023-12-16 06:54:31,807 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:31,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:31,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1352391981, now seen corresponding path program 7 times [2023-12-16 06:54:31,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:31,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999064252] [2023-12-16 06:54:31,808 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 06:54:31,808 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 [2023-12-16 06:54:31,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:31,809 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 06:54:31,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 06:54:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:54:32,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 06:54:32,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7520 backedges. 2996 proven. 715 refuted. 0 times theorem prover too weak. 3809 trivial. 0 not checked. [2023-12-16 06:54:32,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7520 backedges. 0 proven. 3713 refuted. 0 times theorem prover too weak. 3807 trivial. 0 not checked. [2023-12-16 06:54:33,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999064252] [2023-12-16 06:54:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999064252] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:33,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:33,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-12-16 06:54:33,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756848732] [2023-12-16 06:54:33,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:33,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 06:54:33,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:33,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 06:54:33,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 06:54:33,848 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand has 48 states, 48 states have (on average 3.3333333333333335) internal successors, (160), 48 states have internal predecessors, (160), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 06:54:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:37,076 INFO L93 Difference]: Finished difference Result 278 states and 367 transitions. [2023-12-16 06:54:37,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-16 06:54:37,085 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.3333333333333335) internal successors, (160), 48 states have internal predecessors, (160), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 273 [2023-12-16 06:54:37,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:37,086 INFO L225 Difference]: With dead ends: 278 [2023-12-16 06:54:37,086 INFO L226 Difference]: Without dead ends: 188 [2023-12-16 06:54:37,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1279, Invalid=2753, Unknown=0, NotChecked=0, Total=4032 [2023-12-16 06:54:37,090 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 504 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:37,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 851 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 06:54:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-16 06:54:37,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-12-16 06:54:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.2349726775956285) internal successors, (226), 183 states have internal predecessors, (226), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 232 transitions. [2023-12-16 06:54:37,104 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 232 transitions. Word has length 273 [2023-12-16 06:54:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:37,104 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 232 transitions. [2023-12-16 06:54:37,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.3333333333333335) internal successors, (160), 48 states have internal predecessors, (160), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 06:54:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 232 transitions. [2023-12-16 06:54:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-12-16 06:54:37,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:37,110 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 40, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:37,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-16 06:54:37,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:54:37,328 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:37,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:37,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1502291955, now seen corresponding path program 8 times [2023-12-16 06:54:37,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:37,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724642718] [2023-12-16 06:54:37,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:54:37,330 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 [2023-12-16 06:54:37,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:37,331 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-12-16 06:54:37,332 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 (16)] Waiting until timeout for monitored process [2023-12-16 06:54:39,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:54:39,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:54:39,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 06:54:39,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 22667 backedges. 9768 proven. 55 refuted. 0 times theorem prover too weak. 12844 trivial. 0 not checked. [2023-12-16 06:54:39,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 22667 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 22612 trivial. 0 not checked. [2023-12-16 06:54:40,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:40,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724642718] [2023-12-16 06:54:40,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724642718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:40,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:40,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-16 06:54:40,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689670527] [2023-12-16 06:54:40,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:40,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 06:54:40,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 06:54:40,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 06:54:40,111 INFO L87 Difference]: Start difference. First operand 188 states and 232 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 06:54:40,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:40,855 INFO L93 Difference]: Finished difference Result 330 states and 426 transitions. [2023-12-16 06:54:40,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 06:54:40,856 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 435 [2023-12-16 06:54:40,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:40,857 INFO L225 Difference]: With dead ends: 330 [2023-12-16 06:54:40,857 INFO L226 Difference]: Without dead ends: 200 [2023-12-16 06:54:40,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 06:54:40,859 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:40,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 258 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:54:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-16 06:54:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2023-12-16 06:54:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.2205128205128206) internal successors, (238), 195 states have internal predecessors, (238), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 244 transitions. [2023-12-16 06:54:40,869 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 244 transitions. Word has length 435 [2023-12-16 06:54:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:40,869 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 244 transitions. [2023-12-16 06:54:40,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 06:54:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 244 transitions. [2023-12-16 06:54:40,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-12-16 06:54:40,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:40,872 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 40, 22, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:40,898 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 (16)] Forceful destruction successful, exit code 0 [2023-12-16 06:54:41,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-12-16 06:54:41,080 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:41,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:41,081 INFO L85 PathProgramCache]: Analyzing trace with hash 27490701, now seen corresponding path program 9 times [2023-12-16 06:54:41,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:41,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819959680] [2023-12-16 06:54:41,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:54:41,082 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 [2023-12-16 06:54:41,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:41,083 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-12-16 06:54:41,084 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 (17)] Waiting until timeout for monitored process [2023-12-16 06:54:42,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-12-16 06:54:42,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:54:42,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 06:54:42,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:54:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 22865 backedges. 9768 proven. 253 refuted. 0 times theorem prover too weak. 12844 trivial. 0 not checked. [2023-12-16 06:54:42,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:54:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22865 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 22612 trivial. 0 not checked. [2023-12-16 06:54:43,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:54:43,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819959680] [2023-12-16 06:54:43,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819959680] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:54:43,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:54:43,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-12-16 06:54:43,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66849062] [2023-12-16 06:54:43,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:54:43,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 06:54:43,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:54:43,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 06:54:43,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1655, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 06:54:43,763 INFO L87 Difference]: Start difference. First operand 200 states and 244 transitions. Second operand has 48 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 06:54:46,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:54:46,283 INFO L93 Difference]: Finished difference Result 347 states and 448 transitions. [2023-12-16 06:54:46,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-16 06:54:46,284 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 447 [2023-12-16 06:54:46,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:54:46,286 INFO L225 Difference]: With dead ends: 347 [2023-12-16 06:54:46,286 INFO L226 Difference]: Without dead ends: 217 [2023-12-16 06:54:46,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1216, Invalid=2690, Unknown=0, NotChecked=0, Total=3906 [2023-12-16 06:54:46,287 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:46,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 428 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 06:54:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-16 06:54:46,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2023-12-16 06:54:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 212 states have (on average 1.2028301886792452) internal successors, (255), 212 states have internal predecessors, (255), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:54:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 261 transitions. [2023-12-16 06:54:46,298 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 261 transitions. Word has length 447 [2023-12-16 06:54:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:54:46,299 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 261 transitions. [2023-12-16 06:54:46,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 06:54:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 261 transitions. [2023-12-16 06:54:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2023-12-16 06:54:46,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:54:46,302 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 40, 39, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:54:46,315 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 (17)] Forceful destruction successful, exit code 0 [2023-12-16 06:54:46,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2023-12-16 06:54:46,515 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:54:46,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:54:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2045140303, now seen corresponding path program 10 times [2023-12-16 06:54:46,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:54:46,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75280841] [2023-12-16 06:54:46,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 06:54:46,517 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 [2023-12-16 06:54:46,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:54:46,518 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-12-16 06:54:46,521 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 (18)] Waiting until timeout for monitored process [2023-12-16 06:55:24,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 06:55:24,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:55:24,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 541 conjunts are in the unsatisfiable core [2023-12-16 06:55:24,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:55:25,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 Received shutdown request... [2023-12-16 06:55:28,005 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:55:28,039 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 [2023-12-16 06:55:28,039 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:55:28,073 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 (18)] Ended with exit code 0 [2023-12-16 06:55:28,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-12-16 06:55:28,206 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 465 with TraceHistMax 120,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 54 known predicates. [2023-12-16 06:55:28,211 INFO L445 BasicCegarLoop]: Path program histogram: [10, 3, 2, 1, 1] [2023-12-16 06:55:28,214 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:55:28,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:55:28 BoogieIcfgContainer [2023-12-16 06:55:28,216 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:55:28,217 INFO L158 Benchmark]: Toolchain (without parser) took 72784.09ms. Allocated memory was 188.7MB in the beginning and 243.3MB in the end (delta: 54.5MB). Free memory was 137.1MB in the beginning and 203.4MB in the end (delta: -66.3MB). Peak memory consumption was 121.7MB. Max. memory is 8.0GB. [2023-12-16 06:55:28,217 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 188.7MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:55:28,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.50ms. Allocated memory is still 188.7MB. Free memory was 136.9MB in the beginning and 125.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 06:55:28,217 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.13ms. Allocated memory is still 188.7MB. Free memory was 125.1MB in the beginning and 123.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 06:55:28,217 INFO L158 Benchmark]: Boogie Preprocessor took 37.64ms. Allocated memory is still 188.7MB. Free memory was 123.5MB in the beginning and 121.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:55:28,218 INFO L158 Benchmark]: RCFGBuilder took 337.59ms. Allocated memory is still 188.7MB. Free memory was 121.4MB in the beginning and 160.7MB in the end (delta: -39.3MB). Peak memory consumption was 19.7MB. Max. memory is 8.0GB. [2023-12-16 06:55:28,218 INFO L158 Benchmark]: TraceAbstraction took 72167.82ms. Allocated memory was 188.7MB in the beginning and 243.3MB in the end (delta: 54.5MB). Free memory was 160.2MB in the beginning and 203.4MB in the end (delta: -43.2MB). Peak memory consumption was 144.0MB. Max. memory is 8.0GB. [2023-12-16 06:55:28,219 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 188.7MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.50ms. Allocated memory is still 188.7MB. Free memory was 136.9MB in the beginning and 125.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.13ms. Allocated memory is still 188.7MB. Free memory was 125.1MB in the beginning and 123.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.64ms. Allocated memory is still 188.7MB. Free memory was 123.5MB in the beginning and 121.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 337.59ms. Allocated memory is still 188.7MB. Free memory was 121.4MB in the beginning and 160.7MB in the end (delta: -39.3MB). Peak memory consumption was 19.7MB. Max. memory is 8.0GB. * TraceAbstraction took 72167.82ms. Allocated memory was 188.7MB in the beginning and 243.3MB in the end (delta: 54.5MB). Free memory was 160.2MB in the beginning and 203.4MB in the end (delta: -43.2MB). Peak memory consumption was 144.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 50). Cancelled while NwaCegarLoop was analyzing trace of length 465 with TraceHistMax 120,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 54 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.1s, OverallIterations: 17, TraceHistogramMax: 120, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 733 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 733 mSDsluCounter, 3284 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2936 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4207 IncrementalHoareTripleChecker+Invalid, 4240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 348 mSDtfsCounter, 4207 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4287 GetRequests, 3944 SyntacticMatches, 0 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=16, InterpolantAutomatonStates: 263, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 5.8s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 2163 NumberOfCodeBlocks, 1506 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 4163 ConstructedInterpolants, 0 QuantifiedInterpolants, 5521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4559 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 28 InterpolantComputations, 4 PerfectInterpolantSequences, 125869/132689 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown