/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/array-programs/copysome2-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 17:56:00,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 17:56:00,278 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 17:56:00,283 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 17:56:00,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 17:56:00,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 17:56:00,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 17:56:00,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 17:56:00,307 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 17:56:00,310 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 17:56:00,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 17:56:00,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 17:56:00,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 17:56:00,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 17:56:00,312 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 17:56:00,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 17:56:00,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 17:56:00,312 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 17:56:00,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 17:56:00,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 17:56:00,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 17:56:00,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 17:56:00,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 17:56:00,314 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 17:56:00,314 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 17:56:00,314 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 17:56:00,315 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 17:56:00,315 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 17:56:00,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 17:56:00,315 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 17:56:00,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 17:56:00,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 17:56:00,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 17:56:00,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 17:56:00,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:56:00,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 17:56:00,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 17:56:00,317 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 17:56:00,317 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 17:56:00,317 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 17:56:00,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 17:56:00,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 17:56:00,318 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 17:56:00,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 17:56:00,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 17:56:00,318 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 17:56:00,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 17:56:00,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 17:56:00,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 17:56:00,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 17:56:00,535 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 17:56:00,536 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 17:56:00,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/copysome2-2.i [2023-12-21 17:56:01,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 17:56:01,798 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 17:56:01,798 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/copysome2-2.i [2023-12-21 17:56:01,803 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feaebdb18/6958b72e48db48ababb5712ed48c4956/FLAG63bfed5c1 [2023-12-21 17:56:01,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feaebdb18/6958b72e48db48ababb5712ed48c4956 [2023-12-21 17:56:01,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 17:56:01,817 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 17:56:01,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 17:56:01,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 17:56:01,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 17:56:01,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:56:01" (1/1) ... [2023-12-21 17:56:01,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d4595d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:01, skipping insertion in model container [2023-12-21 17:56:01,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:56:01" (1/1) ... [2023-12-21 17:56:01,842 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 17:56:01,969 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/copysome2-2.i[804,817] [2023-12-21 17:56:01,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:56:01,997 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 17:56:02,009 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/copysome2-2.i[804,817] [2023-12-21 17:56:02,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:56:02,041 INFO L206 MainTranslator]: Completed translation [2023-12-21 17:56:02,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02 WrapperNode [2023-12-21 17:56:02,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 17:56:02,044 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 17:56:02,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 17:56:02,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 17:56:02,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,083 INFO L138 Inliner]: procedures = 18, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-12-21 17:56:02,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 17:56:02,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 17:56:02,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 17:56:02,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 17:56:02,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,096 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,110 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 3, 4, 4]. 31 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 1, 2, 3]. [2023-12-21 17:56:02,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 17:56:02,137 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 17:56:02,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 17:56:02,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 17:56:02,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (1/1) ... [2023-12-21 17:56:02,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:56:02,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 17:56:02,160 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) [2023-12-21 17:56:02,169 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 [2023-12-21 17:56:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 17:56:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 17:56:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 17:56:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 17:56:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-21 17:56:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 17:56:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 17:56:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 17:56:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 17:56:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-21 17:56:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 17:56:02,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 17:56:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 17:56:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 17:56:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 17:56:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 17:56:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-21 17:56:02,246 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 17:56:02,248 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 17:56:02,375 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 17:56:02,398 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 17:56:02,398 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-21 17:56:02,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:56:02 BoogieIcfgContainer [2023-12-21 17:56:02,399 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 17:56:02,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 17:56:02,400 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 17:56:02,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 17:56:02,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:56:01" (1/3) ... [2023-12-21 17:56:02,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fa6ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:56:02, skipping insertion in model container [2023-12-21 17:56:02,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:56:02" (2/3) ... [2023-12-21 17:56:02,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fa6ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:56:02, skipping insertion in model container [2023-12-21 17:56:02,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:56:02" (3/3) ... [2023-12-21 17:56:02,404 INFO L112 eAbstractionObserver]: Analyzing ICFG copysome2-2.i [2023-12-21 17:56:02,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 17:56:02,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 17:56:02,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 17:56:02,451 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;@25990cab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 17:56:02,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 17:56:02,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:02,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 17:56:02,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:02,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:02,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:02,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:02,463 INFO L85 PathProgramCache]: Analyzing trace with hash -112711166, now seen corresponding path program 1 times [2023-12-21 17:56:02,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:02,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431587685] [2023-12-21 17:56:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:56:02,471 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 [2023-12-21 17:56:02,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:02,473 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) [2023-12-21 17:56:02,488 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 [2023-12-21 17:56:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:56:02,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 17:56:02,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:56:02,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:56:02,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:02,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431587685] [2023-12-21 17:56:02,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431587685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:56:02,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:56:02,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 17:56:02,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582437685] [2023-12-21 17:56:02,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:56:02,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 17:56:02,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 17:56:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 17:56:02,636 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:02,663 INFO L93 Difference]: Finished difference Result 34 states and 52 transitions. [2023-12-21 17:56:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 17:56:02,665 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-21 17:56:02,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:02,670 INFO L225 Difference]: With dead ends: 34 [2023-12-21 17:56:02,670 INFO L226 Difference]: Without dead ends: 16 [2023-12-21 17:56:02,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 17:56:02,674 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:02,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:56:02,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-21 17:56:02,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-21 17:56:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2023-12-21 17:56:02,694 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 10 [2023-12-21 17:56:02,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:02,694 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2023-12-21 17:56:02,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2023-12-21 17:56:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 17:56:02,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:02,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:02,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 17:56:02,897 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 [2023-12-21 17:56:02,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:02,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:02,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1295475796, now seen corresponding path program 1 times [2023-12-21 17:56:02,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:02,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826308100] [2023-12-21 17:56:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:56:02,899 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 [2023-12-21 17:56:02,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:02,900 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) [2023-12-21 17:56:02,919 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 [2023-12-21 17:56:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:56:02,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 17:56:02,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:56:02,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:56:02,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:02,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826308100] [2023-12-21 17:56:02,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826308100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:56:02,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:56:02,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 17:56:02,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881066407] [2023-12-21 17:56:02,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:56:02,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 17:56:02,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:02,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 17:56:02,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 17:56:02,982 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:03,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:03,045 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2023-12-21 17:56:03,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 17:56:03,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-21 17:56:03,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:03,047 INFO L225 Difference]: With dead ends: 37 [2023-12-21 17:56:03,047 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 17:56:03,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 17:56:03,051 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:03,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 15 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:56:03,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 17:56:03,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-12-21 17:56:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2023-12-21 17:56:03,065 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2023-12-21 17:56:03,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:03,065 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2023-12-21 17:56:03,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-12-21 17:56:03,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 17:56:03,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:03,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:03,081 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 [2023-12-21 17:56:03,268 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 [2023-12-21 17:56:03,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:03,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash -865460509, now seen corresponding path program 1 times [2023-12-21 17:56:03,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:03,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473628905] [2023-12-21 17:56:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:56:03,274 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 [2023-12-21 17:56:03,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:03,275 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) [2023-12-21 17:56:03,278 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 [2023-12-21 17:56:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:56:03,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 17:56:03,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 17:56:03,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:56:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 17:56:03,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:03,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473628905] [2023-12-21 17:56:03,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473628905] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:56:03,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:56:03,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 17:56:03,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803363965] [2023-12-21 17:56:03,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:56:03,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 17:56:03,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:03,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 17:56:03,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 17:56:03,414 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:03,570 INFO L93 Difference]: Finished difference Result 56 states and 80 transitions. [2023-12-21 17:56:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 17:56:03,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-21 17:56:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:03,571 INFO L225 Difference]: With dead ends: 56 [2023-12-21 17:56:03,571 INFO L226 Difference]: Without dead ends: 40 [2023-12-21 17:56:03,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 17:56:03,572 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:03,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 20 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:56:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-21 17:56:03,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-21 17:56:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2023-12-21 17:56:03,577 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 17 [2023-12-21 17:56:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:03,577 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2023-12-21 17:56:03,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2023-12-21 17:56:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 17:56:03,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:03,578 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:03,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 17:56:03,781 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 [2023-12-21 17:56:03,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:03,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash -287792660, now seen corresponding path program 2 times [2023-12-21 17:56:03,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:03,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746069926] [2023-12-21 17:56:03,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:56:03,783 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 [2023-12-21 17:56:03,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:03,785 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) [2023-12-21 17:56:03,785 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 [2023-12-21 17:56:03,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:56:03,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:56:03,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 17:56:03,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 17:56:03,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:56:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 17:56:04,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:04,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746069926] [2023-12-21 17:56:04,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746069926] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:56:04,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:56:04,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 17:56:04,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902842278] [2023-12-21 17:56:04,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:56:04,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 17:56:04,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 17:56:04,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 17:56:04,027 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:04,520 INFO L93 Difference]: Finished difference Result 116 states and 167 transitions. [2023-12-21 17:56:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 17:56:04,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-21 17:56:04,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:04,521 INFO L225 Difference]: With dead ends: 116 [2023-12-21 17:56:04,521 INFO L226 Difference]: Without dead ends: 82 [2023-12-21 17:56:04,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 17:56:04,523 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 180 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:04,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 45 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 17:56:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-21 17:56:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-21 17:56:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2962962962962963) internal successors, (105), 81 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2023-12-21 17:56:04,531 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 38 [2023-12-21 17:56:04,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:04,531 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2023-12-21 17:56:04,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2023-12-21 17:56:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 17:56:04,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:04,532 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:04,544 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 (5)] Ended with exit code 0 [2023-12-21 17:56:04,736 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 [2023-12-21 17:56:04,737 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:04,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:04,737 INFO L85 PathProgramCache]: Analyzing trace with hash -773732532, now seen corresponding path program 3 times [2023-12-21 17:56:04,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:04,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705818862] [2023-12-21 17:56:04,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:56:04,738 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 [2023-12-21 17:56:04,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:04,739 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) [2023-12-21 17:56:04,741 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 [2023-12-21 17:56:04,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 17:56:04,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:56:04,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 17:56:04,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-12-21 17:56:04,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:56:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-12-21 17:56:05,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:05,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705818862] [2023-12-21 17:56:05,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705818862] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:56:05,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:56:05,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-21 17:56:05,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128132761] [2023-12-21 17:56:05,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:56:05,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 17:56:05,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:05,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 17:56:05,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 17:56:05,074 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:05,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:05,212 INFO L93 Difference]: Finished difference Result 288 states and 371 transitions. [2023-12-21 17:56:05,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 17:56:05,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-21 17:56:05,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:05,215 INFO L225 Difference]: With dead ends: 288 [2023-12-21 17:56:05,215 INFO L226 Difference]: Without dead ends: 224 [2023-12-21 17:56:05,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-21 17:56:05,216 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:05,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 25 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:56:05,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-21 17:56:05,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 124. [2023-12-21 17:56:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.1951219512195121) internal successors, (147), 123 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2023-12-21 17:56:05,232 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 80 [2023-12-21 17:56:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:05,232 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2023-12-21 17:56:05,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2023-12-21 17:56:05,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 17:56:05,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:05,234 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:05,247 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 [2023-12-21 17:56:05,446 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 [2023-12-21 17:56:05,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:05,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:05,447 INFO L85 PathProgramCache]: Analyzing trace with hash -722111612, now seen corresponding path program 1 times [2023-12-21 17:56:05,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:05,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776170126] [2023-12-21 17:56:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:56:05,448 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 [2023-12-21 17:56:05,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:05,449 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) [2023-12-21 17:56:05,478 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 [2023-12-21 17:56:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:56:05,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 17:56:05,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-12-21 17:56:05,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:56:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-12-21 17:56:05,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:05,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776170126] [2023-12-21 17:56:05,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776170126] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:56:05,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:56:05,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 17:56:05,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189677613] [2023-12-21 17:56:05,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:56:05,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 17:56:05,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:05,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 17:56:05,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 17:56:05,987 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:08,002 INFO L93 Difference]: Finished difference Result 542 states and 673 transitions. [2023-12-21 17:56:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 17:56:08,003 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-21 17:56:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:08,004 INFO L225 Difference]: With dead ends: 542 [2023-12-21 17:56:08,004 INFO L226 Difference]: Without dead ends: 430 [2023-12-21 17:56:08,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 17:56:08,006 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 906 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:08,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 70 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 17:56:08,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-12-21 17:56:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 280. [2023-12-21 17:56:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.1720430107526882) internal successors, (327), 279 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 327 transitions. [2023-12-21 17:56:08,029 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 327 transitions. Word has length 80 [2023-12-21 17:56:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:08,029 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 327 transitions. [2023-12-21 17:56:08,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 327 transitions. [2023-12-21 17:56:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-21 17:56:08,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:08,033 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 12, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:08,049 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 [2023-12-21 17:56:08,238 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 [2023-12-21 17:56:08,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:08,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2073642312, now seen corresponding path program 2 times [2023-12-21 17:56:08,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:08,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43547535] [2023-12-21 17:56:08,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:56:08,241 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 [2023-12-21 17:56:08,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:08,242 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) [2023-12-21 17:56:08,276 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 [2023-12-21 17:56:08,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:56:08,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:56:08,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 17:56:08,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2023-12-21 17:56:08,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:56:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2023-12-21 17:56:10,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:10,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43547535] [2023-12-21 17:56:10,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43547535] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:56:10,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:56:10,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 17:56:10,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718897453] [2023-12-21 17:56:10,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:56:10,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 17:56:10,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:10,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 17:56:10,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 17:56:10,199 INFO L87 Difference]: Start difference. First operand 280 states and 327 transitions. Second operand has 48 states, 48 states have (on average 1.3125) internal successors, (63), 47 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:20,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:20,940 INFO L93 Difference]: Finished difference Result 1118 states and 1381 transitions. [2023-12-21 17:56:20,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 17:56:20,940 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.3125) internal successors, (63), 47 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2023-12-21 17:56:20,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:20,956 INFO L225 Difference]: With dead ends: 1118 [2023-12-21 17:56:20,956 INFO L226 Difference]: Without dead ends: 862 [2023-12-21 17:56:20,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 17:56:20,959 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3192 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 5133 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3192 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 6248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 5133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:20,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3192 Valid, 135 Invalid, 6248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 5133 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-21 17:56:20,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-12-21 17:56:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 592. [2023-12-21 17:56:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 1.1624365482233503) internal successors, (687), 591 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:21,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 687 transitions. [2023-12-21 17:56:21,010 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 687 transitions. Word has length 164 [2023-12-21 17:56:21,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:21,010 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 687 transitions. [2023-12-21 17:56:21,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.3125) internal successors, (63), 47 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:21,010 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 687 transitions. [2023-12-21 17:56:21,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-21 17:56:21,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:21,018 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 24, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:21,032 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 [2023-12-21 17:56:21,219 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 [2023-12-21 17:56:21,219 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:21,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:21,220 INFO L85 PathProgramCache]: Analyzing trace with hash 730475296, now seen corresponding path program 3 times [2023-12-21 17:56:21,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:21,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559769277] [2023-12-21 17:56:21,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:56:21,221 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 [2023-12-21 17:56:21,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:21,243 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) [2023-12-21 17:56:21,244 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 [2023-12-21 17:56:21,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 17:56:21,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:56:21,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 17:56:21,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 7292 trivial. 0 not checked. [2023-12-21 17:56:21,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:56:21,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:21,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559769277] [2023-12-21 17:56:21,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559769277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:56:21,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:56:21,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 17:56:21,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850217120] [2023-12-21 17:56:21,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:56:21,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 17:56:21,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:21,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 17:56:21,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 17:56:21,664 INFO L87 Difference]: Start difference. First operand 592 states and 687 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:56:21,746 INFO L93 Difference]: Finished difference Result 1121 states and 1308 transitions. [2023-12-21 17:56:21,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 17:56:21,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2023-12-21 17:56:21,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:56:21,749 INFO L225 Difference]: With dead ends: 1121 [2023-12-21 17:56:21,749 INFO L226 Difference]: Without dead ends: 586 [2023-12-21 17:56:21,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 17:56:21,763 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:56:21,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 15 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:56:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-12-21 17:56:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2023-12-21 17:56:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 1.1606837606837608) internal successors, (679), 585 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 679 transitions. [2023-12-21 17:56:21,795 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 679 transitions. Word has length 332 [2023-12-21 17:56:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:56:21,796 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 679 transitions. [2023-12-21 17:56:21,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:56:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 679 transitions. [2023-12-21 17:56:21,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-21 17:56:21,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:56:21,799 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 25, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:56:21,807 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 [2023-12-21 17:56:22,002 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 [2023-12-21 17:56:22,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:56:22,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:56:22,005 INFO L85 PathProgramCache]: Analyzing trace with hash 9331958, now seen corresponding path program 4 times [2023-12-21 17:56:22,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:56:22,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765724580] [2023-12-21 17:56:22,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:56:22,006 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 [2023-12-21 17:56:22,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:56:22,007 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) [2023-12-21 17:56:22,007 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 [2023-12-21 17:56:22,643 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:56:22,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:56:22,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 17:56:22,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:56:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6302 trivial. 0 not checked. [2023-12-21 17:56:23,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:56:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6302 trivial. 0 not checked. [2023-12-21 17:56:28,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:56:28,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765724580] [2023-12-21 17:56:28,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765724580] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:56:28,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:56:28,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 17:56:28,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569646926] [2023-12-21 17:56:28,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:56:28,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 17:56:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:56:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 17:56:28,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 17:56:28,433 INFO L87 Difference]: Start difference. First operand 586 states and 679 transitions. Second operand has 96 states, 96 states have (on average 1.15625) internal successors, (111), 95 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:35,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:57:35,591 INFO L93 Difference]: Finished difference Result 2258 states and 2781 transitions. [2023-12-21 17:57:35,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 17:57:35,592 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.15625) internal successors, (111), 95 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2023-12-21 17:57:35,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:57:35,597 INFO L225 Difference]: With dead ends: 2258 [2023-12-21 17:57:35,597 INFO L226 Difference]: Without dead ends: 1720 [2023-12-21 17:57:35,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 52.2s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 17:57:35,601 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13240 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 20535 mSolverCounterSat, 4539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13240 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 25074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4539 IncrementalHoareTripleChecker+Valid, 20535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:57:35,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13240 Valid, 245 Invalid, 25074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4539 Valid, 20535 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2023-12-21 17:57:35,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2023-12-21 17:57:35,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1210. [2023-12-21 17:57:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 1.1571546732837055) internal successors, (1399), 1209 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1399 transitions. [2023-12-21 17:57:35,659 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1399 transitions. Word has length 332 [2023-12-21 17:57:35,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:57:35,660 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1399 transitions. [2023-12-21 17:57:35,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.15625) internal successors, (111), 95 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:35,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1399 transitions. [2023-12-21 17:57:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-12-21 17:57:35,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:57:35,667 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 49, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:57:35,687 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 [2023-12-21 17:57:35,887 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 [2023-12-21 17:57:35,887 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:57:35,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:57:35,888 INFO L85 PathProgramCache]: Analyzing trace with hash -632225754, now seen corresponding path program 5 times [2023-12-21 17:57:35,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:57:35,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866700495] [2023-12-21 17:57:35,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:57:35,889 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 [2023-12-21 17:57:35,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:57:35,890 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) [2023-12-21 17:57:35,892 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 [2023-12-21 17:57:36,300 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 17:57:36,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:57:36,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 17:57:36,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:57:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 6317 proven. 3 refuted. 0 times theorem prover too weak. 24559 trivial. 0 not checked. [2023-12-21 17:57:36,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:57:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 6317 proven. 3 refuted. 0 times theorem prover too weak. 24559 trivial. 0 not checked. [2023-12-21 17:57:36,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:57:36,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866700495] [2023-12-21 17:57:36,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866700495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:57:36,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:57:36,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-21 17:57:36,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552859145] [2023-12-21 17:57:36,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:57:36,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 17:57:36,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:57:36,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 17:57:36,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-21 17:57:36,447 INFO L87 Difference]: Start difference. First operand 1210 states and 1399 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:57:36,900 INFO L93 Difference]: Finished difference Result 4467 states and 5558 transitions. [2023-12-21 17:57:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 17:57:36,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 668 [2023-12-21 17:57:36,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:57:36,911 INFO L225 Difference]: With dead ends: 4467 [2023-12-21 17:57:36,911 INFO L226 Difference]: Without dead ends: 3374 [2023-12-21 17:57:36,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1337 GetRequests, 1329 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-21 17:57:36,913 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 35 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:57:36,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 82 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 17:57:36,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2023-12-21 17:57:37,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3360. [2023-12-21 17:57:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 3359 states have (on average 1.057755284310807) internal successors, (3553), 3359 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 3553 transitions. [2023-12-21 17:57:37,080 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 3553 transitions. Word has length 668 [2023-12-21 17:57:37,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:57:37,081 INFO L495 AbstractCegarLoop]: Abstraction has 3360 states and 3553 transitions. [2023-12-21 17:57:37,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 3553 transitions. [2023-12-21 17:57:37,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-12-21 17:57:37,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:57:37,094 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 79, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:57:37,097 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 (11)] Ended with exit code 0 [2023-12-21 17:57:37,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:57:37,297 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:57:37,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:57:37,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1604175466, now seen corresponding path program 6 times [2023-12-21 17:57:37,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:57:37,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826297768] [2023-12-21 17:57:37,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:57:37,309 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 [2023-12-21 17:57:37,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:57:37,325 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:57:37,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 17:57:38,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-21 17:57:38,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:57:38,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 17:57:38,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:57:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 463 proven. 2 refuted. 0 times theorem prover too weak. 30414 trivial. 0 not checked. [2023-12-21 17:57:38,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:57:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 463 proven. 2 refuted. 0 times theorem prover too weak. 30414 trivial. 0 not checked. [2023-12-21 17:57:38,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:57:38,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826297768] [2023-12-21 17:57:38,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826297768] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:57:38,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:57:38,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-21 17:57:38,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033374404] [2023-12-21 17:57:38,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:57:38,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 17:57:38,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:57:38,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 17:57:38,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 17:57:38,935 INFO L87 Difference]: Start difference. First operand 3360 states and 3553 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:57:39,211 INFO L93 Difference]: Finished difference Result 6468 states and 6847 transitions. [2023-12-21 17:57:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 17:57:39,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 668 [2023-12-21 17:57:39,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:57:39,218 INFO L225 Difference]: With dead ends: 6468 [2023-12-21 17:57:39,218 INFO L226 Difference]: Without dead ends: 3270 [2023-12-21 17:57:39,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1337 GetRequests, 1328 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-12-21 17:57:39,220 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 71 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:57:39,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 20 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:57:39,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2023-12-21 17:57:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3270. [2023-12-21 17:57:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3269 states have (on average 1.0575099418782503) internal successors, (3457), 3269 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:39,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 3457 transitions. [2023-12-21 17:57:39,390 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 3457 transitions. Word has length 668 [2023-12-21 17:57:39,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:57:39,390 INFO L495 AbstractCegarLoop]: Abstraction has 3270 states and 3457 transitions. [2023-12-21 17:57:39,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:57:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 3457 transitions. [2023-12-21 17:57:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-12-21 17:57:39,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:57:39,397 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 79, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:57:39,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 17:57:39,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:57:39,604 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:57:39,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:57:39,605 INFO L85 PathProgramCache]: Analyzing trace with hash -837755282, now seen corresponding path program 7 times [2023-12-21 17:57:39,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:57:39,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587823128] [2023-12-21 17:57:39,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:57:39,606 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 [2023-12-21 17:57:39,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:57:39,607 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:57:39,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 17:57:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:57:41,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 2395 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 17:57:41,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:57:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 26414 trivial. 0 not checked. [2023-12-21 17:57:44,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:58:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 26414 trivial. 0 not checked. [2023-12-21 17:58:02,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:58:02,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587823128] [2023-12-21 17:58:02,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587823128] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:58:02,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:58:02,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 17:58:02,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523667328] [2023-12-21 17:58:02,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:58:02,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 17:58:02,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:58:02,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 17:58:02,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 17:58:02,995 INFO L87 Difference]: Start difference. First operand 3270 states and 3457 transitions. Second operand has 192 states, 192 states have (on average 1.078125) internal successors, (207), 191 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:09:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:09:33,923 INFO L93 Difference]: Finished difference Result 10026 states and 11263 transitions. [2023-12-21 18:09:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 18:09:33,924 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.078125) internal successors, (207), 191 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 668 [2023-12-21 18:09:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:09:33,946 INFO L225 Difference]: With dead ends: 10026 [2023-12-21 18:09:33,946 INFO L226 Difference]: Without dead ends: 6852 [2023-12-21 18:09:33,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1428 GetRequests, 1144 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 625.0s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 18:09:33,977 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 55000 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 81981 mSolverCounterSat, 18663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55000 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 100644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 18663 IncrementalHoareTripleChecker+Valid, 81981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.7s IncrementalHoareTripleChecker+Time [2023-12-21 18:09:33,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55000 Valid, 485 Invalid, 100644 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [18663 Valid, 81981 Invalid, 0 Unknown, 0 Unchecked, 81.7s Time] [2023-12-21 18:09:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2023-12-21 18:09:34,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6822. [2023-12-21 18:09:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6822 states, 6821 states have (on average 1.0557103064066853) internal successors, (7201), 6821 states have internal predecessors, (7201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:09:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6822 states to 6822 states and 7201 transitions. [2023-12-21 18:09:34,352 INFO L78 Accepts]: Start accepts. Automaton has 6822 states and 7201 transitions. Word has length 668 [2023-12-21 18:09:34,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:09:34,353 INFO L495 AbstractCegarLoop]: Abstraction has 6822 states and 7201 transitions. [2023-12-21 18:09:34,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.078125) internal successors, (207), 191 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 18:09:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6822 states and 7201 transitions. [2023-12-21 18:09:34,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1341 [2023-12-21 18:09:34,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:09:34,371 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 190, 190, 159, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:09:34,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 18:09:34,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:09:34,584 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:09:34,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:09:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1017104306, now seen corresponding path program 8 times [2023-12-21 18:09:34,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:09:34,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80649164] [2023-12-21 18:09:34,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:09:34,587 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 [2023-12-21 18:09:34,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:09:34,588 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:09:34,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 18:09:37,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:09:37,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:09:38,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 4795 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 18:09:38,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:09:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 108110 trivial. 0 not checked. [2023-12-21 18:09:51,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-21 18:10:42,799 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 18:10:42,807 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 (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:10:42,807 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 [2023-12-21 18:10:42,894 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 (14)] Ended with exit code 0 [2023-12-21 18:10:43,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:10:43,001 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 1341 with TraceHistMax 190,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 336 known predicates. [2023-12-21 18:10:43,014 INFO L445 BasicCegarLoop]: Path program histogram: [8, 3, 1, 1] [2023-12-21 18:10:43,017 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 18:10:43,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:10:43 BoogieIcfgContainer [2023-12-21 18:10:43,022 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 18:10:43,022 INFO L158 Benchmark]: Toolchain (without parser) took 881205.04ms. Allocated memory was 335.5MB in the beginning and 402.7MB in the end (delta: 67.1MB). Free memory was 295.2MB in the beginning and 243.2MB in the end (delta: 52.1MB). Peak memory consumption was 119.9MB. Max. memory is 8.0GB. [2023-12-21 18:10:43,022 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 197.1MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 18:10:43,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.59ms. Allocated memory is still 335.5MB. Free memory was 295.2MB in the beginning and 283.5MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 18:10:43,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.64ms. Allocated memory is still 335.5MB. Free memory was 283.5MB in the beginning and 281.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:10:43,024 INFO L158 Benchmark]: Boogie Preprocessor took 49.22ms. Allocated memory is still 335.5MB. Free memory was 281.9MB in the beginning and 279.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:10:43,024 INFO L158 Benchmark]: RCFGBuilder took 261.66ms. Allocated memory is still 335.5MB. Free memory was 279.8MB in the beginning and 264.1MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 18:10:43,025 INFO L158 Benchmark]: TraceAbstraction took 880621.52ms. Allocated memory was 335.5MB in the beginning and 402.7MB in the end (delta: 67.1MB). Free memory was 263.6MB in the beginning and 243.2MB in the end (delta: 20.4MB). Peak memory consumption was 88.5MB. Max. memory is 8.0GB. [2023-12-21 18:10:43,026 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 197.1MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 224.59ms. Allocated memory is still 335.5MB. Free memory was 295.2MB in the beginning and 283.5MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.64ms. Allocated memory is still 335.5MB. Free memory was 283.5MB in the beginning and 281.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.22ms. Allocated memory is still 335.5MB. Free memory was 281.9MB in the beginning and 279.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 261.66ms. Allocated memory is still 335.5MB. Free memory was 279.8MB in the beginning and 264.1MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 880621.52ms. Allocated memory was 335.5MB in the beginning and 402.7MB in the end (delta: 67.1MB). Free memory was 263.6MB in the beginning and 243.2MB in the end (delta: 20.4MB). Peak memory consumption was 88.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was analyzing trace of length 1341 with TraceHistMax 190,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 336 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 880.6s, OverallIterations: 13, TraceHistogramMax: 190, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.1s, AutomataDifference: 772.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72718 SdHoareTripleChecker+Valid, 109.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72718 mSDsluCounter, 1176 SdHoareTripleChecker+Invalid, 95.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1030 mSDsCounter, 24826 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 109622 IncrementalHoareTripleChecker+Invalid, 134448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24826 mSolverCounterUnsat, 146 mSDtfsCounter, 109622 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5948 GetRequests, 5375 SyntacticMatches, 0 SemanticMatches, 573 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5706 ImplicationChecksByTransitivity, 685.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6822occurred in iteration=12, InterpolantAutomatonStates: 410, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 1078 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 31.4s InterpolantComputationTime, 3067 NumberOfCodeBlocks, 1467 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 5761 ConstructedInterpolants, 0 QuantifiedInterpolants, 9684 SizeOfPredicates, 2 NumberOfNonLiveVariables, 5336 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 200505/212283 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown