/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/combinations/gcd_4+newton_2_3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 23:22:16,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 23:22:16,533 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 23:22:16,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 23:22:16,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 23:22:16,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 23:22:16,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 23:22:16,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 23:22:16,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 23:22:16,561 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 23:22:16,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 23:22:16,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 23:22:16,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 23:22:16,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 23:22:16,563 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 23:22:16,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 23:22:16,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 23:22:16,564 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 23:22:16,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 23:22:16,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 23:22:16,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 23:22:16,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 23:22:16,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 23:22:16,566 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 23:22:16,566 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 23:22:16,566 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 23:22:16,566 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 23:22:16,566 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 23:22:16,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 23:22:16,567 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 23:22:16,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 23:22:16,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 23:22:16,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 23:22:16,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 23:22:16,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:22:16,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 23:22:16,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 23:22:16,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 23:22:16,568 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 23:22:16,568 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 23:22:16,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 23:22:16,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 23:22:16,569 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 23:22:16,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 23:22:16,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 23:22:16,569 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 23:22:16,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 23:22:16,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 23:22:16,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 23:22:16,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 23:22:16,749 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 23:22:16,749 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 23:22:16,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/gcd_4+newton_2_3.i [2023-12-21 23:22:17,791 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 23:22:17,948 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 23:22:17,949 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_4+newton_2_3.i [2023-12-21 23:22:17,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8945579a0/13fe0fd72f784b97b76c0a792ef13d3c/FLAGb5ad9b5c8 [2023-12-21 23:22:17,970 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8945579a0/13fe0fd72f784b97b76c0a792ef13d3c [2023-12-21 23:22:17,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 23:22:17,973 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 23:22:17,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 23:22:17,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 23:22:17,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 23:22:17,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:22:17" (1/1) ... [2023-12-21 23:22:17,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5655af1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:17, skipping insertion in model container [2023-12-21 23:22:17,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:22:17" (1/1) ... [2023-12-21 23:22:17,998 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 23:22:18,120 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_4+newton_2_3.i[1224,1237] [2023-12-21 23:22:18,151 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_4+newton_2_3.i[2827,2840] [2023-12-21 23:22:18,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:22:18,166 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 23:22:18,180 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_4+newton_2_3.i[1224,1237] [2023-12-21 23:22:18,198 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_4+newton_2_3.i[2827,2840] [2023-12-21 23:22:18,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:22:18,210 INFO L206 MainTranslator]: Completed translation [2023-12-21 23:22:18,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18 WrapperNode [2023-12-21 23:22:18,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 23:22:18,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 23:22:18,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 23:22:18,212 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 23:22:18,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,250 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 76 [2023-12-21 23:22:18,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 23:22:18,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 23:22:18,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 23:22:18,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 23:22:18,258 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,267 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,282 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-12-21 23:22:18,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 23:22:18,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 23:22:18,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 23:22:18,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 23:22:18,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (1/1) ... [2023-12-21 23:22:18,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:22:18,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 23:22:18,345 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 23:22:18,366 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 23:22:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 23:22:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 23:22:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 23:22:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-12-21 23:22:18,382 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-12-21 23:22:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-12-21 23:22:18,382 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-12-21 23:22:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 23:22:18,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 23:22:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 23:22:18,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 23:22:18,448 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 23:22:18,451 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 23:22:32,612 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 23:22:32,635 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 23:22:32,636 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 23:22:32,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:22:32 BoogieIcfgContainer [2023-12-21 23:22:32,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 23:22:32,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 23:22:32,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 23:22:32,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 23:22:32,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:22:17" (1/3) ... [2023-12-21 23:22:32,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268961ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:22:32, skipping insertion in model container [2023-12-21 23:22:32,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:22:18" (2/3) ... [2023-12-21 23:22:32,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268961ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:22:32, skipping insertion in model container [2023-12-21 23:22:32,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:22:32" (3/3) ... [2023-12-21 23:22:32,641 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_3.i [2023-12-21 23:22:32,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 23:22:32,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 23:22:32,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 23:22:32,690 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;@75617662, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 23:22:32,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 23:22:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.5) internal successors, (36), 26 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-21 23:22:32,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 23:22:32,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:22:32,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:22:32,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:22:32,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:22:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash 531794030, now seen corresponding path program 1 times [2023-12-21 23:22:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:22:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792027304] [2023-12-21 23:22:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:22:32,732 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 23:22:32,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:22:32,756 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 23:22:32,760 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 23:22:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:22:32,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:22:32,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:22:32,906 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 23:22:32,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:22:32,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:22:32,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792027304] [2023-12-21 23:22:32,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792027304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:22:32,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:22:32,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:22:32,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154856213] [2023-12-21 23:22:32,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:22:32,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:22:32,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:22:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:22:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:22:32,932 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.5) internal successors, (36), 26 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 23:22:37,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.94s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:22:41,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:22:46,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:22:50,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:22:51,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:22:51,282 INFO L93 Difference]: Finished difference Result 74 states and 103 transitions. [2023-12-21 23:22:51,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:22:51,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2023-12-21 23:22:51,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:22:51,288 INFO L225 Difference]: With dead ends: 74 [2023-12-21 23:22:51,288 INFO L226 Difference]: Without dead ends: 37 [2023-12-21 23:22:51,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:22:51,296 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2023-12-21 23:22:51,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 62 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 18.3s Time] [2023-12-21 23:22:51,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-21 23:22:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2023-12-21 23:22:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-21 23:22:51,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2023-12-21 23:22:51,338 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 10 [2023-12-21 23:22:51,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:22:51,338 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2023-12-21 23:22:51,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 23:22:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2023-12-21 23:22:51,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 23:22:51,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:22:51,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:22:51,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 23:22:51,540 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 23:22:51,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:22:51,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:22:51,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2010454398, now seen corresponding path program 1 times [2023-12-21 23:22:51,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:22:51,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542066787] [2023-12-21 23:22:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:22:51,544 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 23:22:51,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:22:51,545 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 23:22:51,578 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 23:22:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:22:51,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:22:51,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:22:51,690 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 23:22:51,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:22:51,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:22:51,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542066787] [2023-12-21 23:22:51,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542066787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:22:51,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:22:51,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:22:51,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795975659] [2023-12-21 23:22:51,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:22:51,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:22:51,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:22:51,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:22:51,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:22:51,694 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 23:22:56,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:00,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:05,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:09,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:23:09,979 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2023-12-21 23:23:09,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:23:09,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 23:23:09,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:23:09,980 INFO L225 Difference]: With dead ends: 49 [2023-12-21 23:23:09,980 INFO L226 Difference]: Without dead ends: 35 [2023-12-21 23:23:09,981 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 23:23:09,981 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2023-12-21 23:23:09,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 57 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 4 Unknown, 0 Unchecked, 18.3s Time] [2023-12-21 23:23:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-21 23:23:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-21 23:23:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-21 23:23:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2023-12-21 23:23:09,986 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 12 [2023-12-21 23:23:09,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:23:09,986 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2023-12-21 23:23:09,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 23:23:09,987 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2023-12-21 23:23:09,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-21 23:23:09,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:23:09,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:23:09,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 23:23:10,188 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 23:23:10,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:23:10,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:23:10,190 INFO L85 PathProgramCache]: Analyzing trace with hash -466694725, now seen corresponding path program 1 times [2023-12-21 23:23:10,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:23:10,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774254555] [2023-12-21 23:23:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:23:10,190 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 23:23:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:23:10,207 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 23:23:10,208 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 23:23:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:23:10,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 23:23:10,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:23:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:23:10,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:23:10,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:23:10,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774254555] [2023-12-21 23:23:10,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774254555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:23:10,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:23:10,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:23:10,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454400747] [2023-12-21 23:23:10,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:23:10,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:23:10,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:23:10,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:23:10,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:23:10,489 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 23:23:15,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.91s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:19,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:24,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:28,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:28,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:23:28,723 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2023-12-21 23:23:28,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:23:28,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 14 [2023-12-21 23:23:28,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:23:28,724 INFO L225 Difference]: With dead ends: 50 [2023-12-21 23:23:28,724 INFO L226 Difference]: Without dead ends: 37 [2023-12-21 23:23:28,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 23:23:28,725 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-12-21 23:23:28,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 4 Unknown, 0 Unchecked, 18.2s Time] [2023-12-21 23:23:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-21 23:23:28,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-21 23:23:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-21 23:23:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2023-12-21 23:23:28,729 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 14 [2023-12-21 23:23:28,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:23:28,730 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2023-12-21 23:23:28,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 23:23:28,730 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2023-12-21 23:23:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 23:23:28,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:23:28,730 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:23:28,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-21 23:23:28,934 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 23:23:28,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:23:28,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:23:28,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1903157512, now seen corresponding path program 1 times [2023-12-21 23:23:28,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:23:28,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407493867] [2023-12-21 23:23:28,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:23:28,936 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 23:23:28,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:23:28,937 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 23:23:28,938 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 23:23:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:23:29,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 23:23:29,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:23:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:23:29,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:23:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:23:29,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:23:29,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407493867] [2023-12-21 23:23:29,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407493867] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:23:29,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:23:29,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 23:23:29,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300960313] [2023-12-21 23:23:29,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:23:29,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 23:23:29,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:23:29,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 23:23:29,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:23:29,662 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23:23:34,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.91s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:38,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:42,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:46,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:50,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:55,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:23:59,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:24:03,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:24:07,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:24:10,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 23:24:10,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:24:10,714 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2023-12-21 23:24:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:24:10,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 16 [2023-12-21 23:24:10,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:24:10,717 INFO L225 Difference]: With dead ends: 54 [2023-12-21 23:24:10,717 INFO L226 Difference]: Without dead ends: 41 [2023-12-21 23:24:10,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:24:10,718 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:24:10,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 41.0s Time] [2023-12-21 23:24:10,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-21 23:24:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-21 23:24:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-21 23:24:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2023-12-21 23:24:10,722 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 16 [2023-12-21 23:24:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:24:10,722 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2023-12-21 23:24:10,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23:24:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2023-12-21 23:24:10,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 23:24:10,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:24:10,723 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:24:10,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 23:24:10,923 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 23:24:10,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:24:10,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:24:10,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1416757394, now seen corresponding path program 1 times [2023-12-21 23:24:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:24:10,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063443191] [2023-12-21 23:24:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:24:10,925 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 23:24:10,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:24:10,926 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 23:24:10,927 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 Received shutdown request... [2023-12-21 23:37:10,247 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 23:37:10,261 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 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 23:37:11,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-21 23:37:11,462 WARN L435 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)] Forcibly destroying the process [2023-12-21 23:37:11,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 137 [2023-12-21 23:37:11,492 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-21 23:37:11,493 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-21 23:37:11,493 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 21 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1063443191] and IpTcStrategyModuleCvc4 [930312250]. [2023-12-21 23:37:11,495 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-21 23:37:11,497 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-21 23:37:11,498 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 23:37:11,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:37:11 BoogieIcfgContainer [2023-12-21 23:37:11,499 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 23:37:11,500 INFO L158 Benchmark]: Toolchain (without parser) took 893526.96ms. Allocated memory is still 238.0MB. Free memory was 192.4MB in the beginning and 150.9MB in the end (delta: 41.5MB). Peak memory consumption was 43.1MB. Max. memory is 8.0GB. [2023-12-21 23:37:11,500 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 146.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 23:37:11,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.96ms. Allocated memory is still 238.0MB. Free memory was 192.4MB in the beginning and 179.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 23:37:11,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.51ms. Allocated memory is still 238.0MB. Free memory was 179.8MB in the beginning and 177.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 23:37:11,500 INFO L158 Benchmark]: Boogie Preprocessor took 51.96ms. Allocated memory is still 238.0MB. Free memory was 177.7MB in the beginning and 175.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 23:37:11,501 INFO L158 Benchmark]: RCFGBuilder took 14332.80ms. Allocated memory is still 238.0MB. Free memory was 175.6MB in the beginning and 159.9MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 23:37:11,501 INFO L158 Benchmark]: TraceAbstraction took 878861.88ms. Allocated memory is still 238.0MB. Free memory was 159.3MB in the beginning and 150.9MB in the end (delta: 8.5MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2023-12-21 23:37:11,502 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 146.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.96ms. Allocated memory is still 238.0MB. Free memory was 192.4MB in the beginning and 179.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.51ms. Allocated memory is still 238.0MB. Free memory was 179.8MB in the beginning and 177.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.96ms. Allocated memory is still 238.0MB. Free memory was 177.7MB in the beginning and 175.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 14332.80ms. Allocated memory is still 238.0MB. Free memory was 175.6MB in the beginning and 159.9MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 878861.88ms. Allocated memory is still 238.0MB. Free memory was 159.3MB in the beginning and 150.9MB in the end (delta: 8.5MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 109). Cancelled while NwaCegarLoop was analyzing trace of length 21 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1063443191] and IpTcStrategyModuleCvc4 [930312250]. - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while NwaCegarLoop was analyzing trace of length 21 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1063443191] and IpTcStrategyModuleCvc4 [930312250]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 878.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 96.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 95.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 254 SdHoareTripleChecker+Invalid, 93.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 130 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 124 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 170 SizeOfPredicates, 12 NumberOfNonLiveVariables, 171 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 5/9 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