/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_amount250_file-98.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 07:47:49,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 07:47:49,206 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 07:47:49,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 07:47:49,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 07:47:49,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 07:47:49,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 07:47:49,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 07:47:49,233 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 07:47:49,236 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 07:47:49,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 07:47:49,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 07:47:49,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 07:47:49,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 07:47:49,238 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 07:47:49,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 07:47:49,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 07:47:49,239 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 07:47:49,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 07:47:49,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 07:47:49,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 07:47:49,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 07:47:49,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 07:47:49,240 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 07:47:49,240 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 07:47:49,240 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 07:47:49,241 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 07:47:49,241 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 07:47:49,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 07:47:49,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 07:47:49,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 07:47:49,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 07:47:49,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 07:47:49,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 07:47:49,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 07:47:49,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 07:47:49,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 07:47:49,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 07:47:49,243 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 07:47:49,243 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 07:47:49,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 07:47:49,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 07:47:49,243 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 07:47:49,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 07:47:49,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 07:47:49,244 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 07:47:49,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 07:47:49,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 07:47:49,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 07:47:49,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 07:47:49,453 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 07:47:49,453 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 07:47:49,455 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-98.i [2023-12-24 07:47:50,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 07:47:50,704 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 07:47:50,705 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-98.i [2023-12-24 07:47:50,726 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e4cef33/1e58bacc6ef64490b7fdd0017e7ceff0/FLAG1911874e4 [2023-12-24 07:47:50,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e4cef33/1e58bacc6ef64490b7fdd0017e7ceff0 [2023-12-24 07:47:50,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 07:47:50,738 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 07:47:50,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 07:47:50,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 07:47:50,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 07:47:50,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:47:50" (1/1) ... [2023-12-24 07:47:50,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d6a1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:50, skipping insertion in model container [2023-12-24 07:47:50,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:47:50" (1/1) ... [2023-12-24 07:47:50,785 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 07:47:50,906 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_amount250_file-98.i[916,929] [2023-12-24 07:47:51,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 07:47:51,053 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 07:47:51,062 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_amount250_file-98.i[916,929] [2023-12-24 07:47:51,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 07:47:51,145 INFO L206 MainTranslator]: Completed translation [2023-12-24 07:47:51,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51 WrapperNode [2023-12-24 07:47:51,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 07:47:51,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 07:47:51,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 07:47:51,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 07:47:51,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,190 INFO L138 Inliner]: procedures = 27, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 330 [2023-12-24 07:47:51,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 07:47:51,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 07:47:51,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 07:47:51,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 07:47:51,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,217 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 07:47:51,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,230 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 07:47:51,241 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 07:47:51,241 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 07:47:51,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 07:47:51,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (1/1) ... [2023-12-24 07:47:51,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 07:47:51,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 07:47:51,313 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 07:47:51,369 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 07:47:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 07:47:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 07:47:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 07:47:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 07:47:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 07:47:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 07:47:51,485 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 07:47:51,486 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 07:48:01,283 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 07:48:01,312 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 07:48:01,312 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 07:48:01,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:48:01 BoogieIcfgContainer [2023-12-24 07:48:01,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 07:48:01,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 07:48:01,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 07:48:01,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 07:48:01,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 07:47:50" (1/3) ... [2023-12-24 07:48:01,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e95f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:48:01, skipping insertion in model container [2023-12-24 07:48:01,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:47:51" (2/3) ... [2023-12-24 07:48:01,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e95f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:48:01, skipping insertion in model container [2023-12-24 07:48:01,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:48:01" (3/3) ... [2023-12-24 07:48:01,318 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-98.i [2023-12-24 07:48:01,329 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 07:48:01,329 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 07:48:01,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 07:48:01,360 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;@306c21ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 07:48:01,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 07:48:01,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 92 states have (on average 1.565217391304348) internal successors, (144), 93 states have internal predecessors, (144), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-24 07:48:01,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-24 07:48:01,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:48:01,402 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:48:01,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:48:01,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:48:01,406 INFO L85 PathProgramCache]: Analyzing trace with hash 774146830, now seen corresponding path program 1 times [2023-12-24 07:48:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:48:01,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650795675] [2023-12-24 07:48:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:48:01,422 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 07:48:01,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:48:01,456 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 07:48:01,500 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 07:48:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:48:02,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 07:48:02,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:48:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 3364 trivial. 0 not checked. [2023-12-24 07:48:02,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:48:02,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:48:02,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650795675] [2023-12-24 07:48:02,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650795675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:48:02,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 07:48:02,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 07:48:02,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709500888] [2023-12-24 07:48:02,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:48:02,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 07:48:02,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:48:02,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 07:48:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 07:48:02,269 INFO L87 Difference]: Start difference. First operand has 138 states, 92 states have (on average 1.565217391304348) internal successors, (144), 93 states have internal predecessors, (144), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-24 07:48:06,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:48:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:48:06,518 INFO L93 Difference]: Finished difference Result 273 states and 501 transitions. [2023-12-24 07:48:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 07:48:06,614 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 277 [2023-12-24 07:48:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:48:06,620 INFO L225 Difference]: With dead ends: 273 [2023-12-24 07:48:06,620 INFO L226 Difference]: Without dead ends: 136 [2023-12-24 07:48:06,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 276 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 07:48:06,631 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-24 07:48:06,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-24 07:48:06,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-24 07:48:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-12-24 07:48:06,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 91 states have (on average 1.5274725274725274) internal successors, (139), 91 states have internal predecessors, (139), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-24 07:48:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 225 transitions. [2023-12-24 07:48:06,680 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 225 transitions. Word has length 277 [2023-12-24 07:48:06,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:48:06,680 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 225 transitions. [2023-12-24 07:48:06,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-24 07:48:06,681 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 225 transitions. [2023-12-24 07:48:06,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-24 07:48:06,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:48:06,688 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:48:06,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 07:48:06,904 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 07:48:06,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:48:06,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:48:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1825928204, now seen corresponding path program 1 times [2023-12-24 07:48:06,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:48:06,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040313204] [2023-12-24 07:48:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:48:06,906 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 07:48:06,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:48:06,908 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 07:48:06,909 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 07:48:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:48:07,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 07:48:07,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:48:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 516 proven. 117 refuted. 0 times theorem prover too weak. 2979 trivial. 0 not checked. [2023-12-24 07:48:12,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:48:13,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:48:13,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040313204] [2023-12-24 07:48:13,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040313204] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:48:13,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1874238023] [2023-12-24 07:48:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:48:13,182 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:48:13,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:48:13,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 07:48:13,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-24 07:48:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:48:15,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 07:48:15,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:48:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2023-12-24 07:48:20,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 07:48:20,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1874238023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 07:48:20,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 07:48:20,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-24 07:48:20,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091286297] [2023-12-24 07:48:20,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 07:48:20,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 07:48:20,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:48:20,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 07:48:20,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 07:48:20,347 INFO L87 Difference]: Start difference. First operand 136 states and 225 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-24 07:48:22,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:48:29,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:48:33,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:48:37,702 WARN L539 Checker$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 [] [2023-12-24 07:48:38,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:48:38,121 INFO L93 Difference]: Finished difference Result 406 states and 673 transitions. [2023-12-24 07:48:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 07:48:38,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 277 [2023-12-24 07:48:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:48:38,133 INFO L225 Difference]: With dead ends: 406 [2023-12-24 07:48:38,133 INFO L226 Difference]: Without dead ends: 271 [2023-12-24 07:48:38,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 07:48:38,135 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 91 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2023-12-24 07:48:38,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 469 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 3 Unknown, 0 Unchecked, 17.7s Time] [2023-12-24 07:48:38,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-24 07:48:38,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2023-12-24 07:48:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 180 states have (on average 1.5222222222222221) internal successors, (274), 180 states have internal predecessors, (274), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 07:48:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 446 transitions. [2023-12-24 07:48:38,165 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 446 transitions. Word has length 277 [2023-12-24 07:48:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:48:38,166 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 446 transitions. [2023-12-24 07:48:38,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2023-12-24 07:48:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 446 transitions. [2023-12-24 07:48:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-24 07:48:38,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:48:38,169 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:48:38,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-24 07:48:38,405 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 (3)] Ended with exit code 0 [2023-12-24 07:48:38,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 07:48:38,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:48:38,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:48:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash 607765390, now seen corresponding path program 1 times [2023-12-24 07:48:38,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:48:38,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217462071] [2023-12-24 07:48:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:48:38,588 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 07:48:38,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:48:38,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 07:48:38,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 07:48:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:48:39,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 07:48:39,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:48:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 516 proven. 117 refuted. 0 times theorem prover too weak. 2979 trivial. 0 not checked. [2023-12-24 07:48:43,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:48:44,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:48:44,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217462071] [2023-12-24 07:48:44,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217462071] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:48:44,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [203770510] [2023-12-24 07:48:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:48:44,737 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:48:44,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:48:44,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 07:48:44,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-24 07:48:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:48:46,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 07:48:46,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:48:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 516 proven. 117 refuted. 0 times theorem prover too weak. 2979 trivial. 0 not checked. [2023-12-24 07:48:51,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:48:51,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [203770510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:48:51,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:48:51,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-12-24 07:48:51,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296413207] [2023-12-24 07:48:51,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:48:51,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 07:48:51,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:48:51,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 07:48:51,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-24 07:48:51,855 INFO L87 Difference]: Start difference. First operand 269 states and 446 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-24 07:48:58,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:49:02,808 WARN L539 Checker$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 07:49:06,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:49:10,818 WARN L539 Checker$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 07:49:10,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:49:10,829 INFO L93 Difference]: Finished difference Result 549 states and 901 transitions. [2023-12-24 07:49:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 07:49:10,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 278 [2023-12-24 07:49:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:49:10,918 INFO L225 Difference]: With dead ends: 549 [2023-12-24 07:49:10,918 INFO L226 Difference]: Without dead ends: 281 [2023-12-24 07:49:10,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 1057 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-12-24 07:49:10,921 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 471 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 99 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-24 07:49:10,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 421 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 363 Invalid, 4 Unknown, 0 Unchecked, 18.4s Time] [2023-12-24 07:49:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-24 07:49:10,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 277. [2023-12-24 07:49:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 186 states have (on average 1.4946236559139785) internal successors, (278), 186 states have internal predecessors, (278), 86 states have call successors, (86), 4 states have call predecessors, (86), 4 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 07:49:10,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 450 transitions. [2023-12-24 07:49:10,983 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 450 transitions. Word has length 278 [2023-12-24 07:49:10,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:49:10,994 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 450 transitions. [2023-12-24 07:49:10,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-24 07:49:10,995 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 450 transitions. [2023-12-24 07:49:10,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-24 07:49:10,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:49:10,998 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:49:11,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 07:49:11,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-24 07:49:11,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 07:49:11,399 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:49:11,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:49:11,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1281939369, now seen corresponding path program 1 times [2023-12-24 07:49:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:49:11,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791446054] [2023-12-24 07:49:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:49:11,400 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 07:49:11,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:49:11,408 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 07:49:11,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 07:49:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:49:12,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 07:49:12,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:49:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1836 proven. 57 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2023-12-24 07:49:13,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:49:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 69 proven. 57 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-12-24 07:49:14,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:49:14,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791446054] [2023-12-24 07:49:14,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791446054] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 07:49:14,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:49:14,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-24 07:49:14,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368786842] [2023-12-24 07:49:14,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:49:14,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 07:49:14,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:49:14,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 07:49:14,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 07:49:14,398 INFO L87 Difference]: Start difference. First operand 277 states and 450 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-24 07:49:20,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:49:24,247 WARN L539 Checker$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 07:49:28,258 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 07:49:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:49:28,265 INFO L93 Difference]: Finished difference Result 563 states and 905 transitions. [2023-12-24 07:49:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 07:49:28,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 279 [2023-12-24 07:49:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:49:28,358 INFO L225 Difference]: With dead ends: 563 [2023-12-24 07:49:28,358 INFO L226 Difference]: Without dead ends: 287 [2023-12-24 07:49:28,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 550 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-24 07:49:28,360 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 239 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 53 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-24 07:49:28,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 410 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 241 Invalid, 3 Unknown, 0 Unchecked, 13.7s Time] [2023-12-24 07:49:28,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-24 07:49:28,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2023-12-24 07:49:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 190 states have (on average 1.4421052631578948) internal successors, (274), 190 states have internal predecessors, (274), 86 states have call successors, (86), 6 states have call predecessors, (86), 6 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 07:49:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 446 transitions. [2023-12-24 07:49:28,395 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 446 transitions. Word has length 279 [2023-12-24 07:49:28,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:49:28,396 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 446 transitions. [2023-12-24 07:49:28,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-24 07:49:28,396 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 446 transitions. [2023-12-24 07:49:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-24 07:49:28,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:49:28,398 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:49:28,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 07:49:28,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 07:49:28,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:49:28,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:49:28,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1791412459, now seen corresponding path program 1 times [2023-12-24 07:49:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:49:28,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081772747] [2023-12-24 07:49:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:49:28,619 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 07:49:28,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:49:28,622 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 07:49:28,666 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 07:49:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:49:29,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 07:49:29,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:49:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1836 proven. 57 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2023-12-24 07:49:31,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:49:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 69 proven. 57 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-12-24 07:49:32,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:49:32,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081772747] [2023-12-24 07:49:32,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081772747] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 07:49:32,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:49:32,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-24 07:49:32,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967795134] [2023-12-24 07:49:32,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:49:32,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 07:49:32,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:49:32,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 07:49:32,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 07:49:32,050 INFO L87 Difference]: Start difference. First operand 283 states and 446 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-24 07:49:38,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:49:42,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:49:46,242 WARN L539 Checker$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 07:49:47,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:49:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:49:50,610 INFO L93 Difference]: Finished difference Result 1135 states and 1781 transitions. [2023-12-24 07:49:50,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 07:49:50,611 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 279 [2023-12-24 07:49:50,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:49:50,614 INFO L225 Difference]: With dead ends: 1135 [2023-12-24 07:49:50,614 INFO L226 Difference]: Without dead ends: 853 [2023-12-24 07:49:50,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 550 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2023-12-24 07:49:50,616 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 698 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 312 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-12-24 07:49:50,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 837 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 457 Invalid, 3 Unknown, 0 Unchecked, 17.6s Time] [2023-12-24 07:49:50,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2023-12-24 07:49:50,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 555. [2023-12-24 07:49:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 370 states have (on average 1.427027027027027) internal successors, (528), 370 states have internal predecessors, (528), 172 states have call successors, (172), 12 states have call predecessors, (172), 12 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-24 07:49:50,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 872 transitions. [2023-12-24 07:49:50,657 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 872 transitions. Word has length 279 [2023-12-24 07:49:50,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:49:50,657 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 872 transitions. [2023-12-24 07:49:50,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-24 07:49:50,657 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 872 transitions. [2023-12-24 07:49:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-24 07:49:50,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:49:50,659 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:49:50,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 07:49:50,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 07:49:50,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:49:50,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:49:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash 413891481, now seen corresponding path program 1 times [2023-12-24 07:49:50,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:49:50,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446757049] [2023-12-24 07:49:50,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:49:50,881 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 07:49:50,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:49:50,882 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 07:49:50,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 07:49:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:49:51,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 07:49:51,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:49:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1971 proven. 276 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2023-12-24 07:49:59,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:50:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 102 proven. 147 refuted. 0 times theorem prover too weak. 3363 trivial. 0 not checked. [2023-12-24 07:50:04,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:50:04,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446757049] [2023-12-24 07:50:04,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446757049] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 07:50:04,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:50:04,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2023-12-24 07:50:04,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237268717] [2023-12-24 07:50:04,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:50:04,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 07:50:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:50:04,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 07:50:04,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-12-24 07:50:04,360 INFO L87 Difference]: Start difference. First operand 555 states and 872 transitions. Second operand has 23 states, 22 states have (on average 6.0) internal successors, (132), 20 states have internal predecessors, (132), 8 states have call successors, (70), 5 states have call predecessors, (70), 9 states have return successors, (71), 8 states have call predecessors, (71), 8 states have call successors, (71) [2023-12-24 07:50:16,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:20,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:24,648 WARN L539 Checker$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 07:50:28,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:50:32,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 07:50:42,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:50:42,100 INFO L93 Difference]: Finished difference Result 2411 states and 3601 transitions. [2023-12-24 07:50:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-24 07:50:42,101 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.0) internal successors, (132), 20 states have internal predecessors, (132), 8 states have call successors, (70), 5 states have call predecessors, (70), 9 states have return successors, (71), 8 states have call predecessors, (71), 8 states have call successors, (71) Word has length 280 [2023-12-24 07:50:42,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:50:42,109 INFO L225 Difference]: With dead ends: 2411 [2023-12-24 07:50:42,109 INFO L226 Difference]: Without dead ends: 1857 [2023-12-24 07:50:42,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1245, Invalid=3725, Unknown=0, NotChecked=0, Total=4970 [2023-12-24 07:50:42,112 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 871 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 310 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.3s IncrementalHoareTripleChecker+Time [2023-12-24 07:50:42,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1392 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 1420 Invalid, 4 Unknown, 0 Unchecked, 32.3s Time] [2023-12-24 07:50:42,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2023-12-24 07:50:42,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 661. [2023-12-24 07:50:42,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 460 states have (on average 1.391304347826087) internal successors, (640), 460 states have internal predecessors, (640), 172 states have call successors, (172), 28 states have call predecessors, (172), 28 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-24 07:50:42,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 984 transitions. [2023-12-24 07:50:42,193 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 984 transitions. Word has length 280 [2023-12-24 07:50:42,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:50:42,193 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 984 transitions. [2023-12-24 07:50:42,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.0) internal successors, (132), 20 states have internal predecessors, (132), 8 states have call successors, (70), 5 states have call predecessors, (70), 9 states have return successors, (71), 8 states have call predecessors, (71), 8 states have call successors, (71) [2023-12-24 07:50:42,193 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 984 transitions. [2023-12-24 07:50:42,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-24 07:50:42,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:50:42,195 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:50:42,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-24 07:50:42,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 07:50:42,417 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:50:42,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:50:42,418 INFO L85 PathProgramCache]: Analyzing trace with hash 475931095, now seen corresponding path program 1 times [2023-12-24 07:50:42,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:50:42,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894992157] [2023-12-24 07:50:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:50:42,420 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 07:50:42,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:50:42,438 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 07:50:42,466 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 07:50:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:50:43,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 07:50:43,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:50:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2191 proven. 165 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2023-12-24 07:50:47,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:50:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2023-12-24 07:50:49,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:50:49,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894992157] [2023-12-24 07:50:49,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894992157] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 07:50:49,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 07:50:49,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2023-12-24 07:50:49,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795554067] [2023-12-24 07:50:49,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 07:50:49,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 07:50:49,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 07:50:49,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 07:50:49,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-24 07:50:49,177 INFO L87 Difference]: Start difference. First operand 661 states and 984 transitions. Second operand has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 11 states have internal predecessors, (134), 4 states have call successors, (78), 3 states have call predecessors, (78), 6 states have return successors, (79), 4 states have call predecessors, (79), 4 states have call successors, (79) [2023-12-24 07:50:56,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:51:00,177 WARN L539 Checker$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 07:51:03,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 07:51:03,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 07:51:03,699 INFO L93 Difference]: Finished difference Result 1377 states and 2011 transitions. [2023-12-24 07:51:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 07:51:03,704 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 11 states have internal predecessors, (134), 4 states have call successors, (78), 3 states have call predecessors, (78), 6 states have return successors, (79), 4 states have call predecessors, (79), 4 states have call successors, (79) Word has length 280 [2023-12-24 07:51:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 07:51:03,707 INFO L225 Difference]: With dead ends: 1377 [2023-12-24 07:51:03,707 INFO L226 Difference]: Without dead ends: 717 [2023-12-24 07:51:03,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2023-12-24 07:51:03,710 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 271 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 93 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-24 07:51:03,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 378 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 313 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2023-12-24 07:51:03,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-12-24 07:51:03,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 709. [2023-12-24 07:51:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 496 states have (on average 1.3548387096774193) internal successors, (672), 496 states have internal predecessors, (672), 172 states have call successors, (172), 40 states have call predecessors, (172), 40 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-24 07:51:03,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1016 transitions. [2023-12-24 07:51:03,765 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1016 transitions. Word has length 280 [2023-12-24 07:51:03,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 07:51:03,766 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 1016 transitions. [2023-12-24 07:51:03,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 11 states have internal predecessors, (134), 4 states have call successors, (78), 3 states have call predecessors, (78), 6 states have return successors, (79), 4 states have call predecessors, (79), 4 states have call successors, (79) [2023-12-24 07:51:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1016 transitions. [2023-12-24 07:51:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-24 07:51:03,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 07:51:03,768 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 07:51:03,816 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 07:51:03,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 07:51:03,985 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 07:51:03,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 07:51:03,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1625448089, now seen corresponding path program 1 times [2023-12-24 07:51:03,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 07:51:03,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331850637] [2023-12-24 07:51:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:51:03,987 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 07:51:03,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 07:51:04,001 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 07:51:04,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 07:51:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:51:04,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 07:51:04,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:51:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1848 proven. 63 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2023-12-24 07:51:06,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 07:51:07,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 07:51:07,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331850637] [2023-12-24 07:51:07,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331850637] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 07:51:07,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [74724330] [2023-12-24 07:51:07,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 07:51:07,278 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 07:51:07,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 07:51:07,280 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 07:51:07,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 07:51:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 07:51:09,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 07:51:09,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 07:51:11,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1848 proven. 63 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2023-12-24 07:51:11,586 INFO L327 TraceCheckSpWp]: Computing backward predicates...