/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:35:00,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:35:00,111 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 11:35:00,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:35:00,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:35:00,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:35:00,129 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:35:00,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:35:00,130 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:35:00,130 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:35:00,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:35:00,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:35:00,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:35:00,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:35:00,131 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:35:00,131 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:35:00,132 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:35:00,132 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:35:00,132 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:35:00,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:35:00,132 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:35:00,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:35:00,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:35:00,133 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:35:00,133 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:35:00,133 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:35:00,134 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:35:00,134 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:35:00,134 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:35:00,134 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:35:00,134 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:35:00,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:35:00,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:35:00,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:35:00,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:35:00,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:35:00,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:35:00,136 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:35:00,136 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:35:00,136 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:35:00,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:35:00,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:35:00,136 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:35:00,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:35:00,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:35:00,137 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:35:00,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:35:00,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:35:00,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:35:00,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:35:00,340 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:35:00,340 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:35:00,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-58.i [2023-12-16 11:35:01,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:35:01,521 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:35:01,521 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-58.i [2023-12-16 11:35:01,527 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af05238c8/cb37a7993b7c4e91b4f8757164afcf11/FLAGadbbc5628 [2023-12-16 11:35:01,538 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af05238c8/cb37a7993b7c4e91b4f8757164afcf11 [2023-12-16 11:35:01,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:35:01,542 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:35:01,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:35:01,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:35:01,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:35:01,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dec9903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01, skipping insertion in model container [2023-12-16 11:35:01,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,586 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:35:01,704 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-58.i[915,928] [2023-12-16 11:35:01,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:35:01,793 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:35:01,808 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-58.i[915,928] [2023-12-16 11:35:01,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:35:01,850 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:35:01,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01 WrapperNode [2023-12-16 11:35:01,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:35:01,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:35:01,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:35:01,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:35:01,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,891 INFO L138 Inliner]: procedures = 27, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 233 [2023-12-16 11:35:01,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:35:01,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:35:01,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:35:01,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:35:01,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,904 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,915 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 11:35:01,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,922 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,935 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:35:01,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:35:01,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:35:01,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:35:01,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (1/1) ... [2023-12-16 11:35:01,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:35:01,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:35:01,977 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 11:35:01,980 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 11:35:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:35:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:35:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:35:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:35:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:35:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:35:02,081 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:35:02,085 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:35:02,531 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:35:02,577 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:35:02,577 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:35:02,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:35:02 BoogieIcfgContainer [2023-12-16 11:35:02,578 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:35:02,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:35:02,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:35:02,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:35:02,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:35:01" (1/3) ... [2023-12-16 11:35:02,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5c2eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:35:02, skipping insertion in model container [2023-12-16 11:35:02,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:35:01" (2/3) ... [2023-12-16 11:35:02,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5c2eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:35:02, skipping insertion in model container [2023-12-16 11:35:02,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:35:02" (3/3) ... [2023-12-16 11:35:02,587 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-58.i [2023-12-16 11:35:02,599 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:35:02,599 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:35:02,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:35:02,656 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;@e719e70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:35:02,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:35:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 57 states have internal predecessors, (81), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 11:35:02,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-16 11:35:02,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:35:02,684 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:35:02,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:35:02,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:35:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1576655976, now seen corresponding path program 1 times [2023-12-16 11:35:02,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:35:02,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833070242] [2023-12-16 11:35:02,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:35:02,702 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 11:35:02,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:35:02,704 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 11:35:02,713 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 11:35:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:35:02,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:35:02,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:35:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 2920 trivial. 0 not checked. [2023-12-16 11:35:03,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:35:03,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:35:03,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833070242] [2023-12-16 11:35:03,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833070242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:35:03,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:35:03,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:35:03,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054160165] [2023-12-16 11:35:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:35:03,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:35:03,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:35:03,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:35:03,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:35:03,084 INFO L87 Difference]: Start difference. First operand has 102 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 57 states have internal predecessors, (81), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 11:35:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:35:03,156 INFO L93 Difference]: Finished difference Result 201 states and 375 transitions. [2023-12-16 11:35:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:35:03,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 258 [2023-12-16 11:35:03,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:35:03,180 INFO L225 Difference]: With dead ends: 201 [2023-12-16 11:35:03,180 INFO L226 Difference]: Without dead ends: 100 [2023-12-16 11:35:03,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 257 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 11:35:03,185 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:35:03,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 11:35:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-16 11:35:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-16 11:35:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 11:35:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 162 transitions. [2023-12-16 11:35:03,236 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 162 transitions. Word has length 258 [2023-12-16 11:35:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:35:03,238 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 162 transitions. [2023-12-16 11:35:03,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 11:35:03,238 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 162 transitions. [2023-12-16 11:35:03,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-16 11:35:03,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:35:03,243 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:35:03,252 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 11:35:03,449 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 11:35:03,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:35:03,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:35:03,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1361629394, now seen corresponding path program 1 times [2023-12-16 11:35:03,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:35:03,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330506207] [2023-12-16 11:35:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:35:03,452 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 11:35:03,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:35:03,453 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 11:35:03,454 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 11:35:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:35:03,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 11:35:03,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:35:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1716 proven. 45 refuted. 0 times theorem prover too weak. 1851 trivial. 0 not checked. [2023-12-16 11:35:03,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:35:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 81 proven. 45 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-12-16 11:35:04,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:35:04,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330506207] [2023-12-16 11:35:04,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330506207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:35:04,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:35:04,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 11:35:04,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088757792] [2023-12-16 11:35:04,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:35:04,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 11:35:04,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:35:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 11:35:04,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 11:35:04,124 INFO L87 Difference]: Start difference. First operand 100 states and 162 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-16 11:35:04,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:35:04,984 INFO L93 Difference]: Finished difference Result 314 states and 498 transitions. [2023-12-16 11:35:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 11:35:04,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 258 [2023-12-16 11:35:04,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:35:04,988 INFO L225 Difference]: With dead ends: 314 [2023-12-16 11:35:04,988 INFO L226 Difference]: Without dead ends: 215 [2023-12-16 11:35:04,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 508 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-16 11:35:04,990 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 327 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 11:35:04,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 451 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 11:35:04,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-16 11:35:05,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2023-12-16 11:35:05,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 114 states have (on average 1.3421052631578947) internal successors, (153), 114 states have internal predecessors, (153), 86 states have call successors, (86), 4 states have call predecessors, (86), 4 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-16 11:35:05,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 325 transitions. [2023-12-16 11:35:05,043 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 325 transitions. Word has length 258 [2023-12-16 11:35:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:35:05,046 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 325 transitions. [2023-12-16 11:35:05,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-16 11:35:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 325 transitions. [2023-12-16 11:35:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-16 11:35:05,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:35:05,050 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:35:05,059 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 11:35:05,257 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 11:35:05,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:35:05,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:35:05,258 INFO L85 PathProgramCache]: Analyzing trace with hash 81765716, now seen corresponding path program 1 times [2023-12-16 11:35:05,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:35:05,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64245784] [2023-12-16 11:35:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:35:05,259 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 11:35:05,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:35:05,260 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 11:35:05,264 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 11:35:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:35:05,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:35:05,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:35:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1848 proven. 63 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2023-12-16 11:35:05,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:35:05,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:35:05,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64245784] [2023-12-16 11:35:05,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64245784] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:35:05,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [841739677] [2023-12-16 11:35:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:35:05,898 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:35:05,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:35:05,929 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:35:05,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 11:35:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:35:09,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 11:35:09,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:35:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1848 proven. 63 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2023-12-16 11:35:09,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:35:09,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [841739677] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:35:09,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:35:09,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-16 11:35:09,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420813757] [2023-12-16 11:35:09,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:35:09,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 11:35:09,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:35:09,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 11:35:09,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:35:09,659 INFO L87 Difference]: Start difference. First operand 205 states and 325 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 11:35:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:35:09,909 INFO L93 Difference]: Finished difference Result 425 states and 663 transitions. [2023-12-16 11:35:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 11:35:09,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 258 [2023-12-16 11:35:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:35:09,916 INFO L225 Difference]: With dead ends: 425 [2023-12-16 11:35:09,916 INFO L226 Difference]: Without dead ends: 221 [2023-12-16 11:35:09,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 552 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:35:09,918 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 70 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:35:09,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 241 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 11:35:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-16 11:35:09,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 213. [2023-12-16 11:35:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 120 states have internal predecessors, (155), 86 states have call successors, (86), 6 states have call predecessors, (86), 6 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-16 11:35:09,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 327 transitions. [2023-12-16 11:35:09,948 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 327 transitions. Word has length 258 [2023-12-16 11:35:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:35:09,949 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 327 transitions. [2023-12-16 11:35:09,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-16 11:35:09,949 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 327 transitions. [2023-12-16 11:35:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-16 11:35:09,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:35:09,951 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:35:09,962 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 11:35:10,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-16 11:35:10,361 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 11:35:10,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:35:10,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:35:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash -799485153, now seen corresponding path program 1 times [2023-12-16 11:35:10,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:35:10,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282246562] [2023-12-16 11:35:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:35:10,363 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 11:35:10,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:35:10,363 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 11:35:10,364 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 11:35:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:35:10,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-16 11:35:10,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:36:03,651 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 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:36:03,651 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 11:36:04,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2023-12-16 11:36:04,708 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 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown