/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-53.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:15:36,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:15:36,257 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:15:36,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:15:36,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:15:36,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:15:36,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:15:36,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:15:36,276 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:15:36,276 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:15:36,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:15:36,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:15:36,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:15:36,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:15:36,278 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:15:36,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:15:36,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:15:36,279 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:15:36,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:15:36,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:15:36,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:15:36,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:15:36,284 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:15:36,285 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:15:36,285 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:15:36,285 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:15:36,285 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:15:36,285 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:15:36,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:15:36,286 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:15:36,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:15:36,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:15:36,287 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:15:36,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:15:36,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:15:36,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:15:36,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:15:36,288 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:15:36,288 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:15:36,288 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:15:36,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:15:36,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:15:36,295 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:15:36,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:15:36,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:15:36,295 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:15:36,296 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:15:36,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:15:36,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:15:36,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:15:36,518 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:15:36,518 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:15:36,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-53.i [2023-12-16 11:15:37,606 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:15:37,786 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:15:37,786 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-53.i [2023-12-16 11:15:37,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84132461/48e243b9dc594e0db39c9dd67c0b09f3/FLAG6ad5f797a [2023-12-16 11:15:37,814 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84132461/48e243b9dc594e0db39c9dd67c0b09f3 [2023-12-16 11:15:37,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:15:37,818 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:15:37,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:15:37,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:15:37,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:15:37,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:15:37" (1/1) ... [2023-12-16 11:15:37,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595bda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:37, skipping insertion in model container [2023-12-16 11:15:37,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:15:37" (1/1) ... [2023-12-16 11:15:37,856 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:15:37,954 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-53.i[915,928] [2023-12-16 11:15:38,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:15:38,027 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:15:38,036 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-53.i[915,928] [2023-12-16 11:15:38,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:15:38,082 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:15:38,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38 WrapperNode [2023-12-16 11:15:38,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:15:38,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:15:38,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:15:38,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:15:38,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,149 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 197 [2023-12-16 11:15:38,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:15:38,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:15:38,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:15:38,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:15:38,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,177 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 11:15:38,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:15:38,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:15:38,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:15:38,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:15:38,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (1/1) ... [2023-12-16 11:15:38,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:15:38,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:15:38,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 11:15:38,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 11:15:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:15:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:15:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:15:38,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:15:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:15:38,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:15:38,331 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:15:38,334 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:15:38,947 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:15:39,005 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:15:39,006 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:15:39,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:15:39 BoogieIcfgContainer [2023-12-16 11:15:39,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:15:39,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:15:39,008 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:15:39,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:15:39,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:15:37" (1/3) ... [2023-12-16 11:15:39,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154d366c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:15:39, skipping insertion in model container [2023-12-16 11:15:39,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:15:38" (2/3) ... [2023-12-16 11:15:39,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154d366c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:15:39, skipping insertion in model container [2023-12-16 11:15:39,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:15:39" (3/3) ... [2023-12-16 11:15:39,020 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-53.i [2023-12-16 11:15:39,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:15:39,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:15:39,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:15:39,079 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;@309f9f6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:15:39,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:15:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 48 states have internal predecessors, (66), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 11:15:39,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-16 11:15:39,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:15:39,111 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:15:39,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:15:39,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:15:39,115 INFO L85 PathProgramCache]: Analyzing trace with hash 164228638, now seen corresponding path program 1 times [2023-12-16 11:15:39,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:15:39,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203326728] [2023-12-16 11:15:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:15:39,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:15:39,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:15:39,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:15:39,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 11:15:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:15:39,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:15:39,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:15:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 896 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2023-12-16 11:15:39,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:15:39,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:15:39,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203326728] [2023-12-16 11:15:39,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203326728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:15:39,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:15:39,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:15:39,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586906787] [2023-12-16 11:15:39,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:15:39,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:15:39,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:15:39,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:15:39,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:15:39,499 INFO L87 Difference]: Start difference. First operand has 81 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 48 states have internal predecessors, (66), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-16 11:15:39,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:15:39,779 INFO L93 Difference]: Finished difference Result 159 states and 285 transitions. [2023-12-16 11:15:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:15:39,793 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 191 [2023-12-16 11:15:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:15:39,798 INFO L225 Difference]: With dead ends: 159 [2023-12-16 11:15:39,798 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 11:15:39,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:15:39,805 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:15:39,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 11:15:39,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 11:15:39,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-16 11:15:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 states have internal predecessors, (61), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 11:15:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 123 transitions. [2023-12-16 11:15:39,841 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 123 transitions. Word has length 191 [2023-12-16 11:15:39,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:15:39,841 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 123 transitions. [2023-12-16 11:15:39,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-16 11:15:39,842 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 123 transitions. [2023-12-16 11:15:39,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-16 11:15:39,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:15:39,845 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:15:39,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 11:15:40,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:15:40,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:15:40,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:15:40,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1116303076, now seen corresponding path program 1 times [2023-12-16 11:15:40,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:15:40,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375593377] [2023-12-16 11:15:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:15:40,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:15:40,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:15:40,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:15:40,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 11:15:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:15:40,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:15:40,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:15:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 11:15:40,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:15:40,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:15:40,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375593377] [2023-12-16 11:15:40,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375593377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:15:40,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:15:40,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:15:40,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241989044] [2023-12-16 11:15:40,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:15:40,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:15:40,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:15:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:15:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:15:40,617 INFO L87 Difference]: Start difference. First operand 79 states and 123 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 11:15:40,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:15:40,897 INFO L93 Difference]: Finished difference Result 233 states and 363 transitions. [2023-12-16 11:15:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:15:40,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 191 [2023-12-16 11:15:40,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:15:40,900 INFO L225 Difference]: With dead ends: 233 [2023-12-16 11:15:40,900 INFO L226 Difference]: Without dead ends: 155 [2023-12-16 11:15:40,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:15:40,902 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 22 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 11:15:40,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 232 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 11:15:40,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-16 11:15:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2023-12-16 11:15:40,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 88 states have (on average 1.2954545454545454) internal successors, (114), 88 states have internal predecessors, (114), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-16 11:15:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 238 transitions. [2023-12-16 11:15:40,929 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 238 transitions. Word has length 191 [2023-12-16 11:15:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:15:40,930 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 238 transitions. [2023-12-16 11:15:40,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 11:15:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 238 transitions. [2023-12-16 11:15:40,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-16 11:15:40,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:15:40,932 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:15:40,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 11:15:41,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:15:41,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:15:41,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:15:41,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1526201470, now seen corresponding path program 1 times [2023-12-16 11:15:41,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:15:41,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552700092] [2023-12-16 11:15:41,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:15:41,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:15:41,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:15:41,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:15:41,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 11:15:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:15:41,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 11:15:41,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:15:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 11:15:42,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:15:42,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:15:42,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552700092] [2023-12-16 11:15:42,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552700092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:15:42,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:15:42,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 11:15:42,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552177563] [2023-12-16 11:15:42,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:15:42,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 11:15:42,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:15:42,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 11:15:42,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 11:15:42,081 INFO L87 Difference]: Start difference. First operand 153 states and 238 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 11:15:42,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:15:42,707 INFO L93 Difference]: Finished difference Result 382 states and 592 transitions. [2023-12-16 11:15:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 11:15:42,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2023-12-16 11:15:42,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:15:42,723 INFO L225 Difference]: With dead ends: 382 [2023-12-16 11:15:42,724 INFO L226 Difference]: Without dead ends: 230 [2023-12-16 11:15:42,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 11:15:42,726 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 82 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 11:15:42,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 402 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 11:15:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-16 11:15:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 214. [2023-12-16 11:15:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 117 states have (on average 1.264957264957265) internal successors, (148), 117 states have internal predecessors, (148), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-16 11:15:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 334 transitions. [2023-12-16 11:15:42,749 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 334 transitions. Word has length 192 [2023-12-16 11:15:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:15:42,749 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 334 transitions. [2023-12-16 11:15:42,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 11:15:42,749 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 334 transitions. [2023-12-16 11:15:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-16 11:15:42,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:15:42,752 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:15:42,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 11:15:42,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:15:42,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:15:42,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:15:42,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1401871900, now seen corresponding path program 1 times [2023-12-16 11:15:42,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:15:42,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815731151] [2023-12-16 11:15:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:15:42,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:15:42,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:15:42,974 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:15:42,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 11:15:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:15:43,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:15:43,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:15:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 11:15:43,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:15:43,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:15:43,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815731151] [2023-12-16 11:15:43,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815731151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:15:43,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:15:43,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:15:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861541677] [2023-12-16 11:15:43,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:15:43,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:15:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:15:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:15:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:15:43,230 INFO L87 Difference]: Start difference. First operand 214 states and 334 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 11:15:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:15:43,698 INFO L93 Difference]: Finished difference Result 450 states and 700 transitions. [2023-12-16 11:15:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:15:43,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2023-12-16 11:15:43,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:15:43,702 INFO L225 Difference]: With dead ends: 450 [2023-12-16 11:15:43,702 INFO L226 Difference]: Without dead ends: 298 [2023-12-16 11:15:43,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:15:43,704 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 116 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 11:15:43,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 339 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 11:15:43,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-16 11:15:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 216. [2023-12-16 11:15:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 119 states have internal predecessors, (150), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-16 11:15:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2023-12-16 11:15:43,726 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 192 [2023-12-16 11:15:43,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:15:43,727 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2023-12-16 11:15:43,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 11:15:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2023-12-16 11:15:43,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-16 11:15:43,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:15:43,729 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:15:43,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 11:15:43,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:15:43,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:15:43,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:15:43,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1459130202, now seen corresponding path program 1 times [2023-12-16 11:15:43,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:15:43,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30313642] [2023-12-16 11:15:43,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:15:43,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:15:43,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:15:43,939 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:15:43,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 11:15:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:15:44,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 11:15:44,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:15:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 960 proven. 45 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2023-12-16 11:15:44,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:15:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-12-16 11:15:44,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:15:44,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30313642] [2023-12-16 11:15:44,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30313642] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:15:44,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:15:44,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-12-16 11:15:44,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634359597] [2023-12-16 11:15:44,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:15:44,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 11:15:44,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:15:44,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 11:15:44,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-16 11:15:44,501 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-16 11:15:46,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:15:46,019 INFO L93 Difference]: Finished difference Result 481 states and 727 transitions. [2023-12-16 11:15:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 11:15:46,023 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 192 [2023-12-16 11:15:46,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:15:46,025 INFO L225 Difference]: With dead ends: 481 [2023-12-16 11:15:46,025 INFO L226 Difference]: Without dead ends: 327 [2023-12-16 11:15:46,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 374 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2023-12-16 11:15:46,026 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 328 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:15:46,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 624 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 11:15:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-16 11:15:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 226. [2023-12-16 11:15:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 126 states have (on average 1.2380952380952381) internal successors, (156), 126 states have internal predecessors, (156), 93 states have call successors, (93), 6 states have call predecessors, (93), 6 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-16 11:15:46,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 342 transitions. [2023-12-16 11:15:46,068 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 342 transitions. Word has length 192 [2023-12-16 11:15:46,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:15:46,069 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 342 transitions. [2023-12-16 11:15:46,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-16 11:15:46,074 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 342 transitions. [2023-12-16 11:15:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-16 11:15:46,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:15:46,076 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:15:46,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 11:15:46,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:15:46,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:15:46,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:15:46,285 INFO L85 PathProgramCache]: Analyzing trace with hash 498015678, now seen corresponding path program 1 times [2023-12-16 11:15:46,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:15:46,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7540174] [2023-12-16 11:15:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:15:46,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:15:46,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:15:46,287 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:15:46,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 11:15:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:15:46,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 11:15:46,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:16:52,439 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:16:52,440 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:16:53,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 11:16:53,657 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 11:16:53,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown