/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_operatoramount_amount500_file-26.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 09:28:26,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 09:28:26,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 09:28:26,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 09:28:26,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 09:28:26,490 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 09:28:26,491 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 09:28:26,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 09:28:26,492 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 09:28:26,495 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 09:28:26,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 09:28:26,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 09:28:26,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 09:28:26,498 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 09:28:26,498 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 09:28:26,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 09:28:26,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 09:28:26,498 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 09:28:26,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 09:28:26,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 09:28:26,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 09:28:26,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 09:28:26,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 09:28:26,500 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 09:28:26,500 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 09:28:26,500 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 09:28:26,500 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 09:28:26,500 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 09:28:26,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 09:28:26,500 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 09:28:26,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 09:28:26,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 09:28:26,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 09:28:26,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 09:28:26,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:28:26,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 09:28:26,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 09:28:26,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 09:28:26,502 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 09:28:26,502 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 09:28:26,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 09:28:26,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 09:28:26,503 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 09:28:26,503 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 09:28:26,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 09:28:26,503 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 09:28:26,504 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 09:28:26,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 09:28:26,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 09:28:26,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 09:28:26,754 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 09:28:26,754 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 09:28:26,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-26.i [2023-12-24 09:28:27,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 09:28:28,165 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 09:28:28,165 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-26.i [2023-12-24 09:28:28,193 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b63ef0912/6f08379a3d374571b29226f93766389c/FLAG8779065b8 [2023-12-24 09:28:28,211 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b63ef0912/6f08379a3d374571b29226f93766389c [2023-12-24 09:28:28,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 09:28:28,214 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 09:28:28,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 09:28:28,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 09:28:28,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 09:28:28,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:28,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db0e8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28, skipping insertion in model container [2023-12-24 09:28:28,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:28,267 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 09:28:28,402 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_operatoramount_amount500_file-26.i[916,929] [2023-12-24 09:28:28,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:28:28,636 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 09:28:28,654 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_operatoramount_amount500_file-26.i[916,929] [2023-12-24 09:28:28,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:28:28,799 INFO L206 MainTranslator]: Completed translation [2023-12-24 09:28:28,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28 WrapperNode [2023-12-24 09:28:28,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 09:28:28,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 09:28:28,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 09:28:28,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 09:28:28,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:28,844 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:28,903 INFO L138 Inliner]: procedures = 27, calls = 95, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 619 [2023-12-24 09:28:28,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 09:28:28,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 09:28:28,905 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 09:28:28,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 09:28:28,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:28,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:28,932 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:28,973 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 09:28:28,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:28,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:29,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:29,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:29,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:29,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:29,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 09:28:29,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 09:28:29,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 09:28:29,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 09:28:29,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (1/1) ... [2023-12-24 09:28:29,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:28:29,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 09:28:29,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 09:28:29,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 09:28:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 09:28:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 09:28:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 09:28:29,134 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 09:28:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 09:28:29,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 09:28:29,235 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 09:28:29,236 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 09:29:19,051 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 09:29:19,152 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 09:29:19,152 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 09:29:19,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:29:19 BoogieIcfgContainer [2023-12-24 09:29:19,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 09:29:19,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 09:29:19,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 09:29:19,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 09:29:19,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 09:28:28" (1/3) ... [2023-12-24 09:29:19,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adfac04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:29:19, skipping insertion in model container [2023-12-24 09:29:19,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:28:28" (2/3) ... [2023-12-24 09:29:19,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adfac04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:29:19, skipping insertion in model container [2023-12-24 09:29:19,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:29:19" (3/3) ... [2023-12-24 09:29:19,160 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-26.i [2023-12-24 09:29:19,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 09:29:19,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 09:29:19,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 09:29:19,238 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;@5e339a2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 09:29:19,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 09:29:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 170 states have (on average 1.5941176470588236) internal successors, (271), 171 states have internal predecessors, (271), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 09:29:19,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-24 09:29:19,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:29:19,268 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:29:19,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:29:19,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:29:19,273 INFO L85 PathProgramCache]: Analyzing trace with hash 867165623, now seen corresponding path program 1 times [2023-12-24 09:29:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:29:19,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956359834] [2023-12-24 09:29:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:29:19,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:29:19,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:29:19,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:29:19,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 09:29:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:29:21,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 09:29:21,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:29:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 6554 proven. 0 refuted. 0 times theorem prover too weak. 6730 trivial. 0 not checked. [2023-12-24 09:29:22,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:29:22,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:29:22,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956359834] [2023-12-24 09:29:22,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956359834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:29:22,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 09:29:22,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 09:29:22,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105491091] [2023-12-24 09:29:22,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:29:22,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 09:29:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:29:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 09:29:22,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 09:29:22,164 INFO L87 Difference]: Start difference. First operand has 255 states, 170 states have (on average 1.5941176470588236) internal successors, (271), 171 states have internal predecessors, (271), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Second operand has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-24 09:29:28,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:29:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:29:28,028 INFO L93 Difference]: Finished difference Result 507 states and 950 transitions. [2023-12-24 09:29:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 09:29:28,632 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 529 [2023-12-24 09:29:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:29:28,642 INFO L225 Difference]: With dead ends: 507 [2023-12-24 09:29:28,642 INFO L226 Difference]: Without dead ends: 253 [2023-12-24 09:29:28,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 09:29:28,653 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-24 09:29:28,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 427 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2023-12-24 09:29:28,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-24 09:29:28,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2023-12-24 09:29:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 169 states have (on average 1.5739644970414202) internal successors, (266), 169 states have internal predecessors, (266), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 09:29:28,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 430 transitions. [2023-12-24 09:29:28,738 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 430 transitions. Word has length 529 [2023-12-24 09:29:28,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:29:28,740 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 430 transitions. [2023-12-24 09:29:28,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-24 09:29:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 430 transitions. [2023-12-24 09:29:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-24 09:29:28,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:29:28,751 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:29:28,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 09:29:28,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:29:28,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:29:28,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:29:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1594572091, now seen corresponding path program 1 times [2023-12-24 09:29:28,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:29:28,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385347363] [2023-12-24 09:29:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:29:28,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:29:28,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:29:28,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:29:28,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 09:29:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:29:31,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 09:29:31,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:29:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-24 09:29:50,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:29:50,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:29:50,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385347363] [2023-12-24 09:29:50,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385347363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:29:50,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 09:29:50,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 09:29:50,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366207828] [2023-12-24 09:29:50,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:29:50,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 09:29:50,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:29:50,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 09:29:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 09:29:50,275 INFO L87 Difference]: Start difference. First operand 253 states and 430 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:29:56,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:30:00,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:30:04,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:30:10,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:30:14,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:30:18,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:30:22,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:30:27,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:30:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:30:27,026 INFO L93 Difference]: Finished difference Result 978 states and 1683 transitions. [2023-12-24 09:30:27,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 09:30:27,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 529 [2023-12-24 09:30:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:30:27,658 INFO L225 Difference]: With dead ends: 978 [2023-12-24 09:30:27,658 INFO L226 Difference]: Without dead ends: 726 [2023-12-24 09:30:27,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 09:30:27,660 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 788 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 196 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2023-12-24 09:30:27,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1378 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 36.5s Time] [2023-12-24 09:30:27,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-12-24 09:30:27,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 502. [2023-12-24 09:30:27,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 335 states have (on average 1.5492537313432835) internal successors, (519), 335 states have internal predecessors, (519), 164 states have call successors, (164), 2 states have call predecessors, (164), 2 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-24 09:30:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 847 transitions. [2023-12-24 09:30:27,740 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 847 transitions. Word has length 529 [2023-12-24 09:30:27,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:30:27,742 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 847 transitions. [2023-12-24 09:30:27,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:30:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 847 transitions. [2023-12-24 09:30:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-24 09:30:27,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:30:27,745 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:30:27,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 09:30:27,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:30:27,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:30:27,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:30:27,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1047182752, now seen corresponding path program 1 times [2023-12-24 09:30:27,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:30:27,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947793135] [2023-12-24 09:30:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:30:27,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:30:27,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:30:27,976 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:30:28,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 09:30:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:30:30,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:30:30,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:31:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 4831 proven. 186 refuted. 0 times theorem prover too weak. 8267 trivial. 0 not checked. [2023-12-24 09:31:04,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:31:04,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:31:04,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947793135] [2023-12-24 09:31:04,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947793135] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:31:04,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [392455414] [2023-12-24 09:31:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:31:04,877 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:31:04,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:31:04,879 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) [2023-12-24 09:31:04,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-24 09:31:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:31:06,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:31:06,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:31:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-24 09:31:07,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:31:07,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [392455414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:31:07,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:31:07,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-24 09:31:07,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89665063] [2023-12-24 09:31:07,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:31:07,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:31:07,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:31:07,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:31:07,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 09:31:07,260 INFO L87 Difference]: Start difference. First operand 502 states and 847 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:31:09,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:31:15,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:31:19,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:31:23,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:31:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:31:24,255 INFO L93 Difference]: Finished difference Result 1476 states and 2483 transitions. [2023-12-24 09:31:24,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:31:24,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 530 [2023-12-24 09:31:24,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:31:24,263 INFO L225 Difference]: With dead ends: 1476 [2023-12-24 09:31:24,263 INFO L226 Difference]: Without dead ends: 975 [2023-12-24 09:31:24,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1133 GetRequests, 1126 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 09:31:24,266 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 385 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 23 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-12-24 09:31:24,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 797 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 33 Invalid, 3 Unknown, 0 Unchecked, 17.0s Time] [2023-12-24 09:31:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-12-24 09:31:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 657. [2023-12-24 09:31:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 490 states have (on average 1.5755102040816327) internal successors, (772), 490 states have internal predecessors, (772), 164 states have call successors, (164), 2 states have call predecessors, (164), 2 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-24 09:31:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1100 transitions. [2023-12-24 09:31:24,349 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1100 transitions. Word has length 530 [2023-12-24 09:31:24,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:31:24,354 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1100 transitions. [2023-12-24 09:31:24,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:31:24,354 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1100 transitions. [2023-12-24 09:31:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-24 09:31:24,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:31:24,361 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:31:24,445 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 [2023-12-24 09:31:24,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-24 09:31:24,784 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 [2023-12-24 09:31:24,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:31:24,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:31:24,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1882996758, now seen corresponding path program 1 times [2023-12-24 09:31:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:31:24,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209692428] [2023-12-24 09:31:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:31:24,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:31:24,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:31:24,789 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:31:24,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 09:31:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:31:27,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:31:27,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:32:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 4831 proven. 186 refuted. 0 times theorem prover too weak. 8267 trivial. 0 not checked. [2023-12-24 09:32:02,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:32:02,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:32:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209692428] [2023-12-24 09:32:02,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209692428] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:32:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [152523110] [2023-12-24 09:32:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:32:02,609 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:32:02,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:32:02,610 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:32:02,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 09:32:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:32:03,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:32:03,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:32:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-24 09:32:06,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:32:06,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [152523110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:32:06,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:32:06,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-24 09:32:06,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296358123] [2023-12-24 09:32:06,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:32:06,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:32:06,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:32:06,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:32:06,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 09:32:06,221 INFO L87 Difference]: Start difference. First operand 657 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:32:08,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:32:14,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:32:18,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:32:22,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:32:23,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:32:23,259 INFO L93 Difference]: Finished difference Result 1631 states and 2713 transitions. [2023-12-24 09:32:23,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:32:23,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 531 [2023-12-24 09:32:23,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:32:23,265 INFO L225 Difference]: With dead ends: 1631 [2023-12-24 09:32:23,265 INFO L226 Difference]: Without dead ends: 975 [2023-12-24 09:32:23,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1136 GetRequests, 1129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 09:32:23,268 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 354 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-12-24 09:32:23,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1100 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 3 Unknown, 0 Unchecked, 17.0s Time] [2023-12-24 09:32:23,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-12-24 09:32:23,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 657. [2023-12-24 09:32:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 490 states have (on average 1.5326530612244897) internal successors, (751), 490 states have internal predecessors, (751), 164 states have call successors, (164), 2 states have call predecessors, (164), 2 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-24 09:32:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1079 transitions. [2023-12-24 09:32:23,308 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1079 transitions. Word has length 531 [2023-12-24 09:32:23,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:32:23,309 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1079 transitions. [2023-12-24 09:32:23,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:32:23,309 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1079 transitions. [2023-12-24 09:32:23,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-24 09:32:23,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:32:23,312 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:32:23,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-24 09:32:23,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 09:32:23,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:32:23,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:32:23,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:32:23,735 INFO L85 PathProgramCache]: Analyzing trace with hash -998653932, now seen corresponding path program 1 times [2023-12-24 09:32:23,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:32:23,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123065825] [2023-12-24 09:32:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:32:23,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:32:23,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:32:23,737 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:32:23,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 09:32:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:32:26,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:32:26,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:33:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 4831 proven. 186 refuted. 0 times theorem prover too weak. 8267 trivial. 0 not checked. [2023-12-24 09:33:02,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:33:02,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:33:02,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123065825] [2023-12-24 09:33:02,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123065825] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:33:02,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1070404069] [2023-12-24 09:33:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:33:02,763 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:33:02,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:33:02,765 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:33:02,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-24 09:33:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:33:04,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:33:04,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:33:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-24 09:33:06,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:33:06,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1070404069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:33:06,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:33:06,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-24 09:33:06,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036861694] [2023-12-24 09:33:06,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:33:06,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:33:06,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:33:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:33:06,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 09:33:06,190 INFO L87 Difference]: Start difference. First operand 657 states and 1079 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:33:12,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:33:16,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:33:20,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:33:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:33:21,106 INFO L93 Difference]: Finished difference Result 1328 states and 2181 transitions. [2023-12-24 09:33:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:33:21,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 532 [2023-12-24 09:33:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:33:21,111 INFO L225 Difference]: With dead ends: 1328 [2023-12-24 09:33:21,111 INFO L226 Difference]: Without dead ends: 672 [2023-12-24 09:33:21,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1139 GetRequests, 1132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 09:33:21,114 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 351 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2023-12-24 09:33:21,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1063 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 3 Unknown, 0 Unchecked, 14.9s Time] [2023-12-24 09:33:21,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-12-24 09:33:21,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 657. [2023-12-24 09:33:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 490 states have (on average 1.510204081632653) internal successors, (740), 490 states have internal predecessors, (740), 164 states have call successors, (164), 2 states have call predecessors, (164), 2 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-24 09:33:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1068 transitions. [2023-12-24 09:33:21,148 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1068 transitions. Word has length 532 [2023-12-24 09:33:21,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:33:21,149 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1068 transitions. [2023-12-24 09:33:21,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:33:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1068 transitions. [2023-12-24 09:33:21,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-24 09:33:21,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:33:21,153 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:33:21,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-24 09:33:21,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-24 09:33:21,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:33:21,562 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:33:21,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:33:21,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1018133740, now seen corresponding path program 1 times [2023-12-24 09:33:21,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:33:21,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393460298] [2023-12-24 09:33:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:33:21,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:33:21,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:33:21,565 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) [2023-12-24 09:33:21,567 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 [2023-12-24 09:33:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:33:24,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:33:24,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:34:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 4831 proven. 186 refuted. 0 times theorem prover too weak. 8267 trivial. 0 not checked. [2023-12-24 09:34:00,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:34:00,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:34:00,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393460298] [2023-12-24 09:34:00,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393460298] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:34:00,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [716098881] [2023-12-24 09:34:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:34:00,986 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:34:00,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:34:00,988 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:34:00,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-24 09:34:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:34:02,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:34:02,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:34:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-24 09:34:02,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:34:02,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [716098881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:34:02,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:34:02,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-24 09:34:02,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669282042] [2023-12-24 09:34:02,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:34:02,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:34:02,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:34:02,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:34:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 09:34:02,649 INFO L87 Difference]: Start difference. First operand 657 states and 1068 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:34:08,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:14,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:18,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:19,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:34:19,347 INFO L93 Difference]: Finished difference Result 1957 states and 3178 transitions. [2023-12-24 09:34:19,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:34:19,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 532 [2023-12-24 09:34:19,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:34:19,353 INFO L225 Difference]: With dead ends: 1957 [2023-12-24 09:34:19,353 INFO L226 Difference]: Without dead ends: 1301 [2023-12-24 09:34:19,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1139 GetRequests, 1132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 09:34:19,356 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 414 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-12-24 09:34:19,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 827 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 3 Unknown, 0 Unchecked, 16.7s Time] [2023-12-24 09:34:19,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2023-12-24 09:34:19,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1297. [2023-12-24 09:34:19,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 964 states have (on average 1.4813278008298756) internal successors, (1428), 964 states have internal predecessors, (1428), 328 states have call successors, (328), 4 states have call predecessors, (328), 4 states have return successors, (328), 328 states have call predecessors, (328), 328 states have call successors, (328) [2023-12-24 09:34:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 2084 transitions. [2023-12-24 09:34:19,427 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 2084 transitions. Word has length 532 [2023-12-24 09:34:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:34:19,428 INFO L495 AbstractCegarLoop]: Abstraction has 1297 states and 2084 transitions. [2023-12-24 09:34:19,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:34:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 2084 transitions. [2023-12-24 09:34:19,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-24 09:34:19,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:34:19,443 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:34:19,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-24 09:34:19,715 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 [2023-12-24 09:34:19,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-24 09:34:19,858 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:34:19,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:34:19,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1616184813, now seen corresponding path program 1 times [2023-12-24 09:34:19,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:34:19,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526306018] [2023-12-24 09:34:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:34:19,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:34:19,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:34:19,862 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:34:19,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 09:34:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:34:22,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:34:22,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:35:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 4831 proven. 186 refuted. 0 times theorem prover too weak. 8267 trivial. 0 not checked. [2023-12-24 09:35:00,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:35:00,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:35:00,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526306018] [2023-12-24 09:35:00,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526306018] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:35:00,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [935318290] [2023-12-24 09:35:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:35:00,584 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:35:00,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:35:00,585 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:35:00,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-24 09:35:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:35:02,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 09:35:02,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:35:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-24 09:35:08,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:35:08,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [935318290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:35:08,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:35:08,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-24 09:35:08,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628143933] [2023-12-24 09:35:08,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:35:08,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 09:35:08,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:35:08,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 09:35:08,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-24 09:35:08,943 INFO L87 Difference]: Start difference. First operand 1297 states and 2084 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:35:11,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:18,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:22,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:26,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:31,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:37,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:41,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:45,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:46,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:35:46,165 INFO L93 Difference]: Finished difference Result 4237 states and 6809 transitions. [2023-12-24 09:35:46,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 09:35:46,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 533 [2023-12-24 09:35:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:35:46,177 INFO L225 Difference]: With dead ends: 4237 [2023-12-24 09:35:46,177 INFO L226 Difference]: Without dead ends: 2851 [2023-12-24 09:35:46,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-24 09:35:46,182 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 591 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time [2023-12-24 09:35:46,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1178 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 6 Unknown, 0 Unchecked, 37.1s Time] [2023-12-24 09:35:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2023-12-24 09:35:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1877. [2023-12-24 09:35:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1408 states have (on average 1.484375) internal successors, (2090), 1412 states have internal predecessors, (2090), 460 states have call successors, (460), 8 states have call predecessors, (460), 8 states have return successors, (460), 456 states have call predecessors, (460), 460 states have call successors, (460) [2023-12-24 09:35:46,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 3010 transitions. [2023-12-24 09:35:46,362 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 3010 transitions. Word has length 533 [2023-12-24 09:35:46,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:35:46,362 INFO L495 AbstractCegarLoop]: Abstraction has 1877 states and 3010 transitions. [2023-12-24 09:35:46,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:35:46,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 3010 transitions. [2023-12-24 09:35:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-24 09:35:46,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:35:46,366 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:35:46,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-24 09:35:46,646 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 [2023-12-24 09:35:46,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:35:46,800 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:35:46,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:35:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1862947866, now seen corresponding path program 1 times [2023-12-24 09:35:46,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:35:46,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501910910] [2023-12-24 09:35:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:35:46,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:35:46,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:35:46,804 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:35:46,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 09:35:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:35:49,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:35:49,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:36:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 4831 proven. 186 refuted. 0 times theorem prover too weak. 8267 trivial. 0 not checked. [2023-12-24 09:36:27,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:36:28,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:36:28,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501910910] [2023-12-24 09:36:28,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501910910] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:36:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1147215042] [2023-12-24 09:36:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:36:28,321 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:36:28,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:36:28,322 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:36:28,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-24 09:36:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:36:34,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 09:36:34,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:37:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-24 09:37:38,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:37:38,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1147215042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:37:38,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:37:38,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-24 09:37:38,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327295478] [2023-12-24 09:37:38,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:37:38,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 09:37:38,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:37:38,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 09:37:38,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 09:37:38,563 INFO L87 Difference]: Start difference. First operand 1877 states and 3010 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:37:57,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:38:01,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:38:05,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:38:12,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:38:16,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:38:20,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:38:24,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:38:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:38:24,251 INFO L93 Difference]: Finished difference Result 4660 states and 7461 transitions. [2023-12-24 09:38:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 09:38:24,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 533 [2023-12-24 09:38:24,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:38:24,948 INFO L225 Difference]: With dead ends: 4660 [2023-12-24 09:38:24,948 INFO L226 Difference]: Without dead ends: 2784 [2023-12-24 09:38:24,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1143 GetRequests, 1133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:38:24,953 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 455 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 165 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.0s IncrementalHoareTripleChecker+Time [2023-12-24 09:38:24,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1324 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 189 Invalid, 7 Unknown, 0 Unchecked, 45.0s Time] [2023-12-24 09:38:24,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2023-12-24 09:38:25,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2019. [2023-12-24 09:38:25,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1467 states have (on average 1.4683026584867076) internal successors, (2154), 1471 states have internal predecessors, (2154), 542 states have call successors, (542), 9 states have call predecessors, (542), 9 states have return successors, (542), 538 states have call predecessors, (542), 542 states have call successors, (542) [2023-12-24 09:38:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3238 transitions. [2023-12-24 09:38:25,156 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3238 transitions. Word has length 533 [2023-12-24 09:38:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:38:25,156 INFO L495 AbstractCegarLoop]: Abstraction has 2019 states and 3238 transitions. [2023-12-24 09:38:25,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-24 09:38:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3238 transitions. [2023-12-24 09:38:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-24 09:38:25,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:38:25,161 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:38:25,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-24 09:38:25,438 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 [2023-12-24 09:38:25,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:38:25,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:38:25,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:38:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash -541226157, now seen corresponding path program 1 times [2023-12-24 09:38:25,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:38:25,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623074444] [2023-12-24 09:38:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:38:25,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:38:25,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:38:25,585 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) [2023-12-24 09:38:25,604 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 [2023-12-24 09:38:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:38:28,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:38:28,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:39:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 4831 proven. 186 refuted. 0 times theorem prover too weak. 8267 trivial. 0 not checked. [2023-12-24 09:39:06,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:39:07,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:39:07,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623074444] [2023-12-24 09:39:07,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623074444] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:39:07,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1475539225] [2023-12-24 09:39:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:39:07,152 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:39:07,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:39:07,153 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:39:07,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-24 09:39:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:39:15,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 09:39:15,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:39:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 7800 proven. 276 refuted. 0 times theorem prover too weak. 5208 trivial. 0 not checked. [2023-12-24 09:39:47,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:39:52,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1475539225] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:39:52,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:39:52,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 14 [2023-12-24 09:39:52,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569536001] [2023-12-24 09:39:52,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:39:52,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 09:39:52,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:39:52,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 09:39:52,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-24 09:39:52,624 INFO L87 Difference]: Start difference. First operand 2019 states and 3238 transitions. Second operand has 14 states, 14 states have (on average 18.0) internal successors, (252), 14 states have internal predecessors, (252), 5 states have call successors, (164), 5 states have call predecessors, (164), 8 states have return successors, (164), 5 states have call predecessors, (164), 5 states have call successors, (164) [2023-12-24 09:40:32,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:40:36,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:40:40,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:40:44,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:40:48,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:40:52,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:40:56,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:00,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:04,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:41:08,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:41:12,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:41:16,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:41:20,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:41:24,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:41:28,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:41:35,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:39,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:43,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:47,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:51,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:41:55,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:59,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:42:03,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:42:07,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:42:13,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:42:17,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:42:21,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:42:25,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:42:29,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:42:33,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:42:37,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 09:42:41,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-24 09:43:00,132 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:43:00,133 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:43:00,141 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:43:01,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-24 09:43:01,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-24 09:43:01,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:01,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1214 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 09:43:01,323 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1677 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 272 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 174.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 177.6s IncrementalHoareTripleChecker+Time [2023-12-24 09:43:01,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 2535 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1461 Invalid, 33 Unknown, 0 Unchecked, 177.6s Time] [2023-12-24 09:43:01,324 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 09:43:01,325 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-24 09:43:01,329 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:43:01,331 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 09:43:01,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 09:43:01 BoogieIcfgContainer [2023-12-24 09:43:01,332 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 09:43:01,333 INFO L158 Benchmark]: Toolchain (without parser) took 873118.82ms. Allocated memory was 187.7MB in the beginning and 239.1MB in the end (delta: 51.4MB). Free memory was 117.2MB in the beginning and 80.5MB in the end (delta: 36.7MB). Peak memory consumption was 88.2MB. Max. memory is 8.0GB. [2023-12-24 09:43:01,333 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 187.7MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 09:43:01,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 584.65ms. Allocated memory was 187.7MB in the beginning and 239.1MB in the end (delta: 51.4MB). Free memory was 117.0MB in the beginning and 174.8MB in the end (delta: -57.7MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. [2023-12-24 09:43:01,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.66ms. Allocated memory is still 239.1MB. Free memory was 174.6MB in the beginning and 167.8MB in the end (delta: 6.7MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-24 09:43:01,334 INFO L158 Benchmark]: Boogie Preprocessor took 171.85ms. Allocated memory is still 239.1MB. Free memory was 167.8MB in the beginning and 199.8MB in the end (delta: -31.9MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. [2023-12-24 09:43:01,334 INFO L158 Benchmark]: RCFGBuilder took 50075.69ms. Allocated memory is still 239.1MB. Free memory was 199.8MB in the beginning and 191.2MB in the end (delta: 8.5MB). Peak memory consumption was 90.9MB. Max. memory is 8.0GB. [2023-12-24 09:43:01,334 INFO L158 Benchmark]: TraceAbstraction took 822177.69ms. Allocated memory is still 239.1MB. Free memory was 190.7MB in the beginning and 80.5MB in the end (delta: 110.2MB). Peak memory consumption was 109.7MB. Max. memory is 8.0GB. [2023-12-24 09:43:01,335 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-24 09:43:01,344 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 187.7MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 584.65ms. Allocated memory was 187.7MB in the beginning and 239.1MB in the end (delta: 51.4MB). Free memory was 117.0MB in the beginning and 174.8MB in the end (delta: -57.7MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 99.66ms. Allocated memory is still 239.1MB. Free memory was 174.6MB in the beginning and 167.8MB in the end (delta: 6.7MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 171.85ms. Allocated memory is still 239.1MB. Free memory was 167.8MB in the beginning and 199.8MB in the end (delta: -31.9MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. * RCFGBuilder took 50075.69ms. Allocated memory is still 239.1MB. Free memory was 199.8MB in the beginning and 191.2MB in the end (delta: 8.5MB). Peak memory consumption was 90.9MB. Max. memory is 8.0GB. * TraceAbstraction took 822177.69ms. Allocated memory is still 239.1MB. Free memory was 190.7MB in the beginning and 80.5MB in the end (delta: 110.2MB). Peak memory consumption was 109.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 255 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 822.1s, OverallIterations: 9, TraceHistogramMax: 82, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 382.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 mSolverCounterUnknown, 5026 SdHoareTripleChecker+Valid, 367.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5015 mSDsluCounter, 10629 SdHoareTripleChecker+Invalid, 358.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6285 mSDsCounter, 691 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1963 IncrementalHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 691 mSolverCounterUnsat, 4344 mSDtfsCounter, 1963 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9145 GetRequests, 9054 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 27.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2019occurred in iteration=8, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 2618 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 41.3s SatisfiabilityAnalysisTime, 392.8s InterpolantComputationTime, 8508 NumberOfCodeBlocks, 8508 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8492 ConstructedInterpolants, 39 QuantifiedInterpolants, 36615 SizeOfPredicates, 52 NumberOfNonLiveVariables, 14288 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 210966/212544 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