/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-examples/sanfoundry_02_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 15:27:24,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 15:27:24,269 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 15:27:24,273 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 15:27:24,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 15:27:24,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 15:27:24,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 15:27:24,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 15:27:24,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 15:27:24,299 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 15:27:24,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 15:27:24,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 15:27:24,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 15:27:24,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 15:27:24,301 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 15:27:24,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 15:27:24,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 15:27:24,302 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 15:27:24,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 15:27:24,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 15:27:24,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 15:27:24,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 15:27:24,303 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 15:27:24,303 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 15:27:24,303 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 15:27:24,303 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 15:27:24,303 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 15:27:24,303 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 15:27:24,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 15:27:24,304 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 15:27:24,305 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 15:27:24,305 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 15:27:24,305 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 15:27:24,305 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 15:27:24,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:27:24,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 15:27:24,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 15:27:24,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 15:27:24,306 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 15:27:24,306 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 15:27:24,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 15:27:24,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 15:27:24,307 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 15:27:24,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 15:27:24,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 15:27:24,307 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 15:27:24,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 15:27:24,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 15:27:24,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 15:27:24,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 15:27:24,522 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 15:27:24,522 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 15:27:24,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_02_ground.i [2023-12-21 15:27:25,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 15:27:25,704 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 15:27:25,705 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_02_ground.i [2023-12-21 15:27:25,711 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff9bb57b/8e00edbc5dfb4eefa34c88bdce79d273/FLAG5397a26dc [2023-12-21 15:27:25,722 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff9bb57b/8e00edbc5dfb4eefa34c88bdce79d273 [2023-12-21 15:27:25,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 15:27:25,724 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 15:27:25,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 15:27:25,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 15:27:25,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 15:27:25,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b511dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25, skipping insertion in model container [2023-12-21 15:27:25,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,748 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 15:27:25,842 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-examples/sanfoundry_02_ground.i[813,826] [2023-12-21 15:27:25,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:27:25,860 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 15:27:25,868 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-examples/sanfoundry_02_ground.i[813,826] [2023-12-21 15:27:25,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:27:25,883 INFO L206 MainTranslator]: Completed translation [2023-12-21 15:27:25,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25 WrapperNode [2023-12-21 15:27:25,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 15:27:25,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 15:27:25,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 15:27:25,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 15:27:25,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,931 INFO L138 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 92 [2023-12-21 15:27:25,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 15:27:25,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 15:27:25,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 15:27:25,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 15:27:25,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,953 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,962 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-21 15:27:25,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 15:27:25,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 15:27:25,975 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 15:27:25,975 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 15:27:25,976 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:27:25,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 15:27:25,999 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 15:27:26,015 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 15:27:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 15:27:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 15:27:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 15:27:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 15:27:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 15:27:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 15:27:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 15:27:26,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 15:27:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 15:27:26,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 15:27:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 15:27:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 15:27:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 15:27:26,112 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 15:27:26,113 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 15:27:26,272 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 15:27:26,292 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 15:27:26,292 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-21 15:27:26,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:26 BoogieIcfgContainer [2023-12-21 15:27:26,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 15:27:26,294 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 15:27:26,294 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 15:27:26,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 15:27:26,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:27:25" (1/3) ... [2023-12-21 15:27:26,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ade9423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:26, skipping insertion in model container [2023-12-21 15:27:26,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (2/3) ... [2023-12-21 15:27:26,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ade9423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:26, skipping insertion in model container [2023-12-21 15:27:26,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:26" (3/3) ... [2023-12-21 15:27:26,298 INFO L112 eAbstractionObserver]: Analyzing ICFG sanfoundry_02_ground.i [2023-12-21 15:27:26,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 15:27:26,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 15:27:26,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 15:27:26,351 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;@5d78a57f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 15:27:26,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 15:27:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:26,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 15:27:26,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:26,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:26,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:26,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1444274552, now seen corresponding path program 1 times [2023-12-21 15:27:26,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:26,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152422145] [2023-12-21 15:27:26,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:26,377 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 15:27:26,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:26,380 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 15:27:26,384 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 15:27:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:26,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:27:26,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:26,504 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 15:27:26,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:26,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:26,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152422145] [2023-12-21 15:27:26,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152422145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:26,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:26,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:27:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002063838] [2023-12-21 15:27:26,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:26,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:27:26,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:27:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:26,534 INFO L87 Difference]: Start difference. First operand has 26 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:26,605 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2023-12-21 15:27:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:27:26,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-21 15:27:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:26,611 INFO L225 Difference]: With dead ends: 51 [2023-12-21 15:27:26,611 INFO L226 Difference]: Without dead ends: 25 [2023-12-21 15:27:26,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 15:27:26,615 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:26,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-21 15:27:26,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-21 15:27:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2023-12-21 15:27:26,641 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 12 [2023-12-21 15:27:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:26,641 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2023-12-21 15:27:26,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2023-12-21 15:27:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-21 15:27:26,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:26,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:26,647 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 15:27:26,844 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 15:27:26,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:26,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2140809395, now seen corresponding path program 1 times [2023-12-21 15:27:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:26,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22768151] [2023-12-21 15:27:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:26,846 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 15:27:26,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:26,847 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 15:27:26,860 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 15:27:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:26,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:27:26,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:26,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:26,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:26,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22768151] [2023-12-21 15:27:26,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22768151] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:26,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:26,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 15:27:26,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189325175] [2023-12-21 15:27:26,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:26,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 15:27:26,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 15:27:26,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 15:27:26,934 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:27,028 INFO L93 Difference]: Finished difference Result 55 states and 77 transitions. [2023-12-21 15:27:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:27:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-21 15:27:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:27,029 INFO L225 Difference]: With dead ends: 55 [2023-12-21 15:27:27,029 INFO L226 Difference]: Without dead ends: 33 [2023-12-21 15:27:27,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 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 15:27:27,030 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:27,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 83 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-21 15:27:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-21 15:27:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2023-12-21 15:27:27,035 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 13 [2023-12-21 15:27:27,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:27,035 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2023-12-21 15:27:27,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,036 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2023-12-21 15:27:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 15:27:27,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:27,036 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:27,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-21 15:27:27,238 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 15:27:27,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:27,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:27,239 INFO L85 PathProgramCache]: Analyzing trace with hash 865968072, now seen corresponding path program 1 times [2023-12-21 15:27:27,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:27,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513656486] [2023-12-21 15:27:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:27,240 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 15:27:27,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:27,241 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 15:27:27,241 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 15:27:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:27,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 15:27:27,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 15:27:27,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 15:27:27,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:27,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513656486] [2023-12-21 15:27:27,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513656486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:27,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:27,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 15:27:27,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778890448] [2023-12-21 15:27:27,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:27,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 15:27:27,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 15:27:27,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 15:27:27,408 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:27,732 INFO L93 Difference]: Finished difference Result 90 states and 133 transitions. [2023-12-21 15:27:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 15:27:27,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 15:27:27,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:27,733 INFO L225 Difference]: With dead ends: 90 [2023-12-21 15:27:27,733 INFO L226 Difference]: Without dead ends: 63 [2023-12-21 15:27:27,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 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 15:27:27,734 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 130 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:27,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 155 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 15:27:27,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-21 15:27:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-12-21 15:27:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 59 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2023-12-21 15:27:27,741 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 85 transitions. Word has length 22 [2023-12-21 15:27:27,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:27,741 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 85 transitions. [2023-12-21 15:27:27,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,741 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2023-12-21 15:27:27,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 15:27:27,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:27,742 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:27,746 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 15:27:27,944 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 15:27:27,945 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:27,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:27,947 INFO L85 PathProgramCache]: Analyzing trace with hash -30062168, now seen corresponding path program 2 times [2023-12-21 15:27:27,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:27,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658849495] [2023-12-21 15:27:27,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:27:27,948 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 15:27:27,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:27,949 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 15:27:27,951 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 15:27:28,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:27:28,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:28,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 15:27:28,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 15:27:28,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-21 15:27:28,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:28,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658849495] [2023-12-21 15:27:28,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658849495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:28,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:28,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 15:27:28,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949633500] [2023-12-21 15:27:28,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:28,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 15:27:28,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 15:27:28,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 15:27:28,419 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand has 24 states, 24 states have (on average 1.5) internal successors, (36), 23 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:29,789 INFO L93 Difference]: Finished difference Result 174 states and 265 transitions. [2023-12-21 15:27:29,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 15:27:29,790 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 23 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-21 15:27:29,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:29,791 INFO L225 Difference]: With dead ends: 174 [2023-12-21 15:27:29,791 INFO L226 Difference]: Without dead ends: 123 [2023-12-21 15:27:29,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 15:27:29,793 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 605 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:29,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 359 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 15:27:29,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-21 15:27:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-12-21 15:27:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 119 states have (on average 1.3865546218487395) internal successors, (165), 119 states have internal predecessors, (165), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2023-12-21 15:27:29,804 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 46 [2023-12-21 15:27:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:29,804 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2023-12-21 15:27:29,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 23 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2023-12-21 15:27:29,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 15:27:29,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:29,807 INFO L195 NwaCegarLoop]: trace histogram [22, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:29,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:30,012 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 15:27:30,012 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:30,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:30,013 INFO L85 PathProgramCache]: Analyzing trace with hash -877423256, now seen corresponding path program 3 times [2023-12-21 15:27:30,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:30,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878103206] [2023-12-21 15:27:30,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 15:27:30,014 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 15:27:30,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:30,015 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 15:27:30,016 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 15:27:30,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-21 15:27:30,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:30,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 15:27:30,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-21 15:27:30,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-21 15:27:31,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:31,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878103206] [2023-12-21 15:27:31,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878103206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:31,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:31,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 15:27:31,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735094254] [2023-12-21 15:27:31,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:31,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 15:27:31,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:31,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 15:27:31,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 15:27:31,848 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand has 48 states, 48 states have (on average 1.25) internal successors, (60), 47 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:39,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:39,290 INFO L93 Difference]: Finished difference Result 342 states and 529 transitions. [2023-12-21 15:27:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 15:27:39,290 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.25) internal successors, (60), 47 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 15:27:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:39,292 INFO L225 Difference]: With dead ends: 342 [2023-12-21 15:27:39,292 INFO L226 Difference]: Without dead ends: 243 [2023-12-21 15:27:39,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 15:27:39,294 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 3015 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3015 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 3223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:39,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3015 Valid, 983 Invalid, 3852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 3223 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 15:27:39,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-21 15:27:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2023-12-21 15:27:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 239 states have (on average 1.393305439330544) internal successors, (333), 239 states have internal predecessors, (333), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 337 transitions. [2023-12-21 15:27:39,308 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 337 transitions. Word has length 94 [2023-12-21 15:27:39,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:39,308 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 337 transitions. [2023-12-21 15:27:39,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.25) internal successors, (60), 47 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 337 transitions. [2023-12-21 15:27:39,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 15:27:39,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:39,310 INFO L195 NwaCegarLoop]: trace histogram [46, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:39,317 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 (6)] Ended with exit code 0 [2023-12-21 15:27:39,515 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 15:27:39,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:39,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash -250344216, now seen corresponding path program 4 times [2023-12-21 15:27:39,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:39,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594302452] [2023-12-21 15:27:39,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 15:27:39,517 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 15:27:39,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:39,518 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 15:27:39,534 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 15:27:39,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 15:27:39,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:39,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 15:27:39,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3963 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2882 trivial. 0 not checked. [2023-12-21 15:27:40,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3963 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2882 trivial. 0 not checked. [2023-12-21 15:27:45,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:45,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594302452] [2023-12-21 15:27:45,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594302452] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:45,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:45,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 15:27:45,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683496203] [2023-12-21 15:27:45,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:45,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 15:27:45,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:45,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 15:27:45,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 15:27:45,105 INFO L87 Difference]: Start difference. First operand 243 states and 337 transitions. Second operand has 96 states, 96 states have (on average 1.125) internal successors, (108), 95 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:37,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:28:37,359 INFO L93 Difference]: Finished difference Result 678 states and 1057 transitions. [2023-12-21 15:28:37,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 15:28:37,359 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.125) internal successors, (108), 95 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-12-21 15:28:37,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:28:37,362 INFO L225 Difference]: With dead ends: 678 [2023-12-21 15:28:37,362 INFO L226 Difference]: Without dead ends: 483 [2023-12-21 15:28:37,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 15:28:37,367 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 11140 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 13359 mSolverCounterSat, 2278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11140 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 15637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2278 IncrementalHoareTripleChecker+Valid, 13359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:28:37,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11140 Valid, 3133 Invalid, 15637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2278 Valid, 13359 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-21 15:28:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-12-21 15:28:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2023-12-21 15:28:37,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 479 states have (on average 1.3966597077244258) internal successors, (669), 479 states have internal predecessors, (669), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:28:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 673 transitions. [2023-12-21 15:28:37,408 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 673 transitions. Word has length 190 [2023-12-21 15:28:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:28:37,409 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 673 transitions. [2023-12-21 15:28:37,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.125) internal successors, (108), 95 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 673 transitions. [2023-12-21 15:28:37,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-21 15:28:37,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:28:37,413 INFO L195 NwaCegarLoop]: trace histogram [94, 92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:28:37,424 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 (7)] Forceful destruction successful, exit code 0 [2023-12-21 15:28:37,624 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 15:28:37,624 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:28:37,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:28:37,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1566278680, now seen corresponding path program 5 times [2023-12-21 15:28:37,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:28:37,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107836161] [2023-12-21 15:28:37,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 15:28:37,626 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 15:28:37,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:28:37,627 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 15:28:37,628 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 15:28:48,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 93 check-sat command(s) [2023-12-21 15:28:48,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:28:48,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-21 15:28:48,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:28:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 17115 backedges. 0 proven. 12650 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 15:28:51,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:29:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 17115 backedges. 0 proven. 12650 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 15:29:13,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:29:13,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107836161] [2023-12-21 15:29:13,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107836161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:29:13,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:29:13,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 96] total 189 [2023-12-21 15:29:13,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022857594] [2023-12-21 15:29:13,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:29:13,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 189 states [2023-12-21 15:29:13,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:29:13,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2023-12-21 15:29:13,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9118, Invalid=26414, Unknown=0, NotChecked=0, Total=35532 [2023-12-21 15:29:13,716 INFO L87 Difference]: Start difference. First operand 483 states and 673 transitions. Second operand has 189 states, 189 states have (on average 2.994708994708995) internal successors, (566), 189 states have internal predecessors, (566), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:36:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:36:34,950 INFO L93 Difference]: Finished difference Result 874 states and 1349 transitions. [2023-12-21 15:36:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2023-12-21 15:36:34,957 INFO L78 Accepts]: Start accepts. Automaton has has 189 states, 189 states have (on average 2.994708994708995) internal successors, (566), 189 states have internal predecessors, (566), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2023-12-21 15:36:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:36:34,960 INFO L225 Difference]: With dead ends: 874 [2023-12-21 15:36:34,960 INFO L226 Difference]: Without dead ends: 859 [2023-12-21 15:36:34,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4368 ImplicationChecksByTransitivity, 436.2s TimeCoverageRelationStatistics Valid=26692, Invalid=52550, Unknown=0, NotChecked=0, Total=79242 [2023-12-21 15:36:34,966 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 27805 mSDsluCounter, 9597 mSDsCounter, 0 mSdLazyCounter, 44206 mSolverCounterSat, 4828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27805 SdHoareTripleChecker+Valid, 9712 SdHoareTripleChecker+Invalid, 49034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4828 IncrementalHoareTripleChecker+Valid, 44206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2023-12-21 15:36:34,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27805 Valid, 9712 Invalid, 49034 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4828 Valid, 44206 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2023-12-21 15:36:34,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-12-21 15:36:35,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2023-12-21 15:36:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 855 states have (on average 1.4421052631578948) internal successors, (1233), 855 states have internal predecessors, (1233), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:36:35,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1237 transitions. [2023-12-21 15:36:35,010 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1237 transitions. Word has length 382 [2023-12-21 15:36:35,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:36:35,011 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1237 transitions. [2023-12-21 15:36:35,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 189 states, 189 states have (on average 2.994708994708995) internal successors, (566), 189 states have internal predecessors, (566), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:36:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1237 transitions. [2023-12-21 15:36:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-12-21 15:36:35,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:36:35,025 INFO L195 NwaCegarLoop]: trace histogram [186, 186, 186, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:36:35,043 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 15:36:35,236 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 15:36:35,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:36:35,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:36:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1847780376, now seen corresponding path program 6 times [2023-12-21 15:36:35,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:36:35,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950897742] [2023-12-21 15:36:35,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 15:36:35,239 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 15:36:35,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:36:35,243 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 15:36:35,244 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 15:36:55,439 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2023-12-21 15:36:55,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:36:55,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-21 15:36:55,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:36:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 56266 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 51801 trivial. 0 not checked. [2023-12-21 15:36:58,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:37:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 56266 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 51801 trivial. 0 not checked. [2023-12-21 15:37:24,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:37:24,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950897742] [2023-12-21 15:37:24,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950897742] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:37:24,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:37:24,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 15:37:24,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564748956] [2023-12-21 15:37:24,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:37:24,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 15:37:24,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:37:24,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 15:37:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 15:37:24,308 INFO L87 Difference]: Start difference. First operand 859 states and 1237 transitions. Second operand has 192 states, 192 states have (on average 1.0625) internal successors, (204), 191 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 15:41:57,748 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 15:41:57,748 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 15:41:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-12-21 15:41:57,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1367 GetRequests, 1136 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 296.0s TimeCoverageRelationStatistics Valid=17086, Invalid=36506, Unknown=0, NotChecked=0, Total=53592 [2023-12-21 15:41:57,762 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-21 15:41:57,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 9162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9161 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-21 15:41:57,763 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 15:41:57,789 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 (9)] Forceful destruction successful, exit code 0 [2023-12-21 15:41:57,965 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 15:41:57,965 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (859states) and FLOYD_HOARE automaton (currently 137 states, 192 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 232 known predicates. [2023-12-21 15:41:57,972 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2023-12-21 15:41:57,974 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 15:41:57,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:41:57 BoogieIcfgContainer [2023-12-21 15:41:57,975 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 15:41:57,975 INFO L158 Benchmark]: Toolchain (without parser) took 872251.46ms. Allocated memory was 386.9MB in the beginning and 464.5MB in the end (delta: 77.6MB). Free memory was 334.9MB in the beginning and 350.6MB in the end (delta: -15.7MB). Peak memory consumption was 63.0MB. Max. memory is 8.0GB. [2023-12-21 15:41:57,976 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 220.2MB. Free memory is still 166.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 15:41:57,976 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.83ms. Allocated memory is still 386.9MB. Free memory was 334.3MB in the beginning and 322.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 15:41:57,976 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.28ms. Allocated memory is still 386.9MB. Free memory was 322.8MB in the beginning and 321.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 15:41:57,976 INFO L158 Benchmark]: Boogie Preprocessor took 42.17ms. Allocated memory is still 386.9MB. Free memory was 321.2MB in the beginning and 319.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 15:41:57,976 INFO L158 Benchmark]: RCFGBuilder took 317.79ms. Allocated memory is still 386.9MB. Free memory was 319.1MB in the beginning and 303.9MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 15:41:57,977 INFO L158 Benchmark]: TraceAbstraction took 871681.06ms. Allocated memory was 386.9MB in the beginning and 464.5MB in the end (delta: 77.6MB). Free memory was 303.3MB in the beginning and 350.6MB in the end (delta: -47.3MB). Peak memory consumption was 31.6MB. Max. memory is 8.0GB. [2023-12-21 15:41:57,977 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 220.2MB. Free memory is still 166.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 157.83ms. Allocated memory is still 386.9MB. Free memory was 334.3MB in the beginning and 322.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.28ms. Allocated memory is still 386.9MB. Free memory was 322.8MB in the beginning and 321.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.17ms. Allocated memory is still 386.9MB. Free memory was 321.2MB in the beginning and 319.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 317.79ms. Allocated memory is still 386.9MB. Free memory was 319.1MB in the beginning and 303.9MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 871681.06ms. Allocated memory was 386.9MB in the beginning and 464.5MB in the end (delta: 77.6MB). Free memory was 303.3MB in the beginning and 350.6MB in the end (delta: -47.3MB). Peak memory consumption was 31.6MB. 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 constructing difference of abstraction (859states) and FLOYD_HOARE automaton (currently 137 states, 192 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 232 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 871.6s, OverallIterations: 8, TraceHistogramMax: 186, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 776.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42710 SdHoareTripleChecker+Valid, 42.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42710 mSDsluCounter, 14475 SdHoareTripleChecker+Invalid, 36.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14142 mSDsCounter, 7912 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70925 IncrementalHoareTripleChecker+Invalid, 78837 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7912 mSolverCounterUnsat, 333 mSDtfsCounter, 70925 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3129 GetRequests, 2358 SyntacticMatches, 0 SemanticMatches, 770 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6465 ImplicationChecksByTransitivity, 787.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=859occurred in iteration=7, InterpolantAutomatonStates: 378, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 31.3s SatisfiabilityAnalysisTime, 61.5s InterpolantComputationTime, 1423 NumberOfCodeBlocks, 1120 NumberOfCodeBlocksAsserted, 206 NumberOfCheckSat, 2819 ConstructedInterpolants, 0 QuantifiedInterpolants, 8118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3157 ConjunctsInSsa, 303 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 119670/156700 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