/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/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 18:24:15,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 18:24:15,584 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 18:24:15,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 18:24:15,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 18:24:15,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 18:24:15,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 18:24:15,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 18:24:15,629 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 18:24:15,629 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 18:24:15,629 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 18:24:15,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 18:24:15,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 18:24:15,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 18:24:15,630 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 18:24:15,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 18:24:15,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 18:24:15,631 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 18:24:15,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 18:24:15,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 18:24:15,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 18:24:15,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 18:24:15,633 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 18:24:15,633 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 18:24:15,633 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 18:24:15,633 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 18:24:15,633 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 18:24:15,634 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 18:24:15,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 18:24:15,634 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 18:24:15,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 18:24:15,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 18:24:15,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 18:24:15,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 18:24:15,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:24:15,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 18:24:15,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 18:24:15,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 18:24:15,635 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 18:24:15,635 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 18:24:15,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 18:24:15,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 18:24:15,638 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 18:24:15,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 18:24:15,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 18:24:15,639 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 18:24:15,639 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 18:24:15,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 18:24:15,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 18:24:15,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 18:24:15,898 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 18:24:15,899 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 18:24:15,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-16 18:24:16,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 18:24:17,194 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 18:24:17,194 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-16 18:24:17,212 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac1a38784/b4e62a25534f472abbed9ced731b2cf5/FLAG6d7f5c45b [2023-12-16 18:24:17,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac1a38784/b4e62a25534f472abbed9ced731b2cf5 [2023-12-16 18:24:17,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 18:24:17,231 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 18:24:17,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 18:24:17,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 18:24:17,235 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 18:24:17,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684784f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17, skipping insertion in model container [2023-12-16 18:24:17,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 18:24:17,464 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6876,6889] [2023-12-16 18:24:17,473 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9071,9084] [2023-12-16 18:24:17,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:24:17,489 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 18:24:17,522 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6876,6889] [2023-12-16 18:24:17,540 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9071,9084] [2023-12-16 18:24:17,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:24:17,555 INFO L206 MainTranslator]: Completed translation [2023-12-16 18:24:17,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17 WrapperNode [2023-12-16 18:24:17,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 18:24:17,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 18:24:17,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 18:24:17,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 18:24:17,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,620 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 473 [2023-12-16 18:24:17,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 18:24:17,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 18:24:17,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 18:24:17,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 18:24:17,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,632 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,643 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 18:24:17,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,651 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,655 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 18:24:17,656 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 18:24:17,656 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 18:24:17,656 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 18:24:17,657 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (1/1) ... [2023-12-16 18:24:17,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:24:17,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 18:24:17,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 18:24:17,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 18:24:17,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 18:24:17,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 18:24:17,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 18:24:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 18:24:17,810 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 18:24:17,812 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 18:24:18,193 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 18:24:18,216 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 18:24:18,217 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 18:24:18,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:24:18 BoogieIcfgContainer [2023-12-16 18:24:18,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 18:24:18,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 18:24:18,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 18:24:18,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 18:24:18,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:24:17" (1/3) ... [2023-12-16 18:24:18,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5ead69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:24:18, skipping insertion in model container [2023-12-16 18:24:18,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:24:17" (2/3) ... [2023-12-16 18:24:18,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5ead69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:24:18, skipping insertion in model container [2023-12-16 18:24:18,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:24:18" (3/3) ... [2023-12-16 18:24:18,223 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-16 18:24:18,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 18:24:18,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 18:24:18,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 18:24:18,272 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;@7a4d054d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 18:24:18,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 18:24:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 101 states have (on average 1.7623762376237624) internal successors, (178), 103 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 18:24:18,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:18,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:18,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:18,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:18,290 INFO L85 PathProgramCache]: Analyzing trace with hash -945003803, now seen corresponding path program 1 times [2023-12-16 18:24:18,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:18,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670916094] [2023-12-16 18:24:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:18,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:18,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:18,308 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:18,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 18:24:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:18,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:24:18,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:18,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:18,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670916094] [2023-12-16 18:24:18,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670916094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:18,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:18,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:24:18,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844193696] [2023-12-16 18:24:18,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:18,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:24:18,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:18,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:24:18,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:18,719 INFO L87 Difference]: Start difference. First operand has 104 states, 101 states have (on average 1.7623762376237624) internal successors, (178), 103 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:18,896 INFO L93 Difference]: Finished difference Result 253 states and 418 transitions. [2023-12-16 18:24:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:24:18,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-16 18:24:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:18,904 INFO L225 Difference]: With dead ends: 253 [2023-12-16 18:24:18,904 INFO L226 Difference]: Without dead ends: 164 [2023-12-16 18:24:18,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:24:18,908 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 668 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:18,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 175 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:24:18,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-16 18:24:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 159. [2023-12-16 18:24:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.4458598726114649) internal successors, (227), 158 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 227 transitions. [2023-12-16 18:24:18,935 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 227 transitions. Word has length 46 [2023-12-16 18:24:18,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:18,936 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 227 transitions. [2023-12-16 18:24:18,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 227 transitions. [2023-12-16 18:24:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 18:24:18,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:18,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:18,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:19,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:19,141 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:19,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:19,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1004655178, now seen corresponding path program 1 times [2023-12-16 18:24:19,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:19,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462470745] [2023-12-16 18:24:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:19,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:19,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:19,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:19,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 18:24:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:19,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:24:19,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:19,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:19,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462470745] [2023-12-16 18:24:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462470745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:19,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:19,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:24:19,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072838235] [2023-12-16 18:24:19,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:19,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:24:19,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:19,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:24:19,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:19,353 INFO L87 Difference]: Start difference. First operand 159 states and 227 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:19,434 INFO L93 Difference]: Finished difference Result 293 states and 428 transitions. [2023-12-16 18:24:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:24:19,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-16 18:24:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:19,435 INFO L225 Difference]: With dead ends: 293 [2023-12-16 18:24:19,435 INFO L226 Difference]: Without dead ends: 159 [2023-12-16 18:24:19,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:24:19,437 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 352 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:19,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 88 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:24:19,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-16 18:24:19,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-16 18:24:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.4267515923566878) internal successors, (224), 158 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 224 transitions. [2023-12-16 18:24:19,443 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 224 transitions. Word has length 47 [2023-12-16 18:24:19,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:19,443 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 224 transitions. [2023-12-16 18:24:19,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:19,443 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 224 transitions. [2023-12-16 18:24:19,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-16 18:24:19,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:19,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:19,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:19,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:19,649 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:19,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:19,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1766368239, now seen corresponding path program 1 times [2023-12-16 18:24:19,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:19,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071317947] [2023-12-16 18:24:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:19,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:19,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:19,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:19,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 18:24:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:19,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:24:19,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:19,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:19,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:19,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071317947] [2023-12-16 18:24:19,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071317947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:19,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:19,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:24:19,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265053345] [2023-12-16 18:24:19,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:19,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:24:19,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:24:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:19,862 INFO L87 Difference]: Start difference. First operand 159 states and 224 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:19,940 INFO L93 Difference]: Finished difference Result 289 states and 418 transitions. [2023-12-16 18:24:19,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:24:19,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-16 18:24:19,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:19,941 INFO L225 Difference]: With dead ends: 289 [2023-12-16 18:24:19,941 INFO L226 Difference]: Without dead ends: 159 [2023-12-16 18:24:19,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:24:19,942 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 227 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:19,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 96 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:24:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-16 18:24:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-16 18:24:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.4076433121019107) internal successors, (221), 158 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 221 transitions. [2023-12-16 18:24:19,947 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 221 transitions. Word has length 48 [2023-12-16 18:24:19,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:19,947 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 221 transitions. [2023-12-16 18:24:19,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:19,947 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 221 transitions. [2023-12-16 18:24:19,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 18:24:19,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:19,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:19,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 18:24:20,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:20,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:20,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:20,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1050360310, now seen corresponding path program 1 times [2023-12-16 18:24:20,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:20,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469483426] [2023-12-16 18:24:20,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:20,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:20,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:20,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:20,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 18:24:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:20,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 18:24:20,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:20,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:20,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:20,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469483426] [2023-12-16 18:24:20,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469483426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:20,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:20,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 18:24:20,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065770162] [2023-12-16 18:24:20,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:20,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 18:24:20,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 18:24:20,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:24:20,449 INFO L87 Difference]: Start difference. First operand 159 states and 221 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:20,753 INFO L93 Difference]: Finished difference Result 262 states and 375 transitions. [2023-12-16 18:24:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 18:24:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-16 18:24:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:20,755 INFO L225 Difference]: With dead ends: 262 [2023-12-16 18:24:20,755 INFO L226 Difference]: Without dead ends: 159 [2023-12-16 18:24:20,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-16 18:24:20,756 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 536 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:20,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 182 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 18:24:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-16 18:24:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-16 18:24:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.4012738853503184) internal successors, (220), 158 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 220 transitions. [2023-12-16 18:24:20,760 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 220 transitions. Word has length 49 [2023-12-16 18:24:20,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:20,760 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 220 transitions. [2023-12-16 18:24:20,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 220 transitions. [2023-12-16 18:24:20,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 18:24:20,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:20,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:20,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:20,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:20,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:20,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:20,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1334558207, now seen corresponding path program 1 times [2023-12-16 18:24:20,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:20,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955123104] [2023-12-16 18:24:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:20,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:20,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:20,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:20,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 18:24:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:21,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:24:21,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:21,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:21,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:21,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955123104] [2023-12-16 18:24:21,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955123104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:21,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:21,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 18:24:21,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965666746] [2023-12-16 18:24:21,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:21,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 18:24:21,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:21,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 18:24:21,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:24:21,382 INFO L87 Difference]: Start difference. First operand 159 states and 220 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:21,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:21,908 INFO L93 Difference]: Finished difference Result 273 states and 385 transitions. [2023-12-16 18:24:21,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 18:24:21,909 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-16 18:24:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:21,910 INFO L225 Difference]: With dead ends: 273 [2023-12-16 18:24:21,910 INFO L226 Difference]: Without dead ends: 164 [2023-12-16 18:24:21,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-16 18:24:21,911 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 912 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:21,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 270 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:24:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-16 18:24:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 159. [2023-12-16 18:24:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.3885350318471337) internal successors, (218), 158 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 218 transitions. [2023-12-16 18:24:21,915 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 218 transitions. Word has length 50 [2023-12-16 18:24:21,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:21,915 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 218 transitions. [2023-12-16 18:24:21,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:21,915 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 218 transitions. [2023-12-16 18:24:21,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 18:24:21,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:21,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:21,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:22,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:22,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:22,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:22,119 INFO L85 PathProgramCache]: Analyzing trace with hash -855620319, now seen corresponding path program 1 times [2023-12-16 18:24:22,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:22,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965893800] [2023-12-16 18:24:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:22,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:22,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:22,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:22,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 18:24:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:22,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:24:22,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:22,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:22,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:22,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965893800] [2023-12-16 18:24:22,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965893800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:22,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:22,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 18:24:22,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744567229] [2023-12-16 18:24:22,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:22,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 18:24:22,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 18:24:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:24:22,535 INFO L87 Difference]: Start difference. First operand 159 states and 218 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:23,008 INFO L93 Difference]: Finished difference Result 258 states and 364 transitions. [2023-12-16 18:24:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 18:24:23,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-16 18:24:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:23,010 INFO L225 Difference]: With dead ends: 258 [2023-12-16 18:24:23,010 INFO L226 Difference]: Without dead ends: 159 [2023-12-16 18:24:23,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-12-16 18:24:23,011 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 452 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:23,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 229 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:24:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-16 18:24:23,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-16 18:24:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.375796178343949) internal successors, (216), 158 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 216 transitions. [2023-12-16 18:24:23,014 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 216 transitions. Word has length 51 [2023-12-16 18:24:23,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:23,014 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 216 transitions. [2023-12-16 18:24:23,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:23,014 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 216 transitions. [2023-12-16 18:24:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 18:24:23,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:23,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:23,020 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 (7)] Ended with exit code 0 [2023-12-16 18:24:23,218 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 [2023-12-16 18:24:23,218 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:23,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:23,218 INFO L85 PathProgramCache]: Analyzing trace with hash 872198696, now seen corresponding path program 1 times [2023-12-16 18:24:23,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:23,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882898460] [2023-12-16 18:24:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:23,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:23,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:23,220 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) [2023-12-16 18:24:23,221 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 [2023-12-16 18:24:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:23,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:24:23,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:23,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:23,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:23,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882898460] [2023-12-16 18:24:23,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882898460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:23,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:23,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:24:23,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238506999] [2023-12-16 18:24:23,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:23,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:24:23,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:23,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:24:23,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:23,487 INFO L87 Difference]: Start difference. First operand 159 states and 216 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:23,578 INFO L93 Difference]: Finished difference Result 550 states and 798 transitions. [2023-12-16 18:24:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:24:23,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 18:24:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:23,581 INFO L225 Difference]: With dead ends: 550 [2023-12-16 18:24:23,581 INFO L226 Difference]: Without dead ends: 463 [2023-12-16 18:24:23,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:23,582 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 234 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:23,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 462 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:24:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-12-16 18:24:23,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 358. [2023-12-16 18:24:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 356 states have (on average 1.4297752808988764) internal successors, (509), 357 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 509 transitions. [2023-12-16 18:24:23,588 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 509 transitions. Word has length 52 [2023-12-16 18:24:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:23,588 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 509 transitions. [2023-12-16 18:24:23,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 509 transitions. [2023-12-16 18:24:23,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 18:24:23,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:23,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:23,592 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 [2023-12-16 18:24:23,791 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 [2023-12-16 18:24:23,792 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:23,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:23,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1883376843, now seen corresponding path program 1 times [2023-12-16 18:24:23,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:23,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082549804] [2023-12-16 18:24:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:23,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:23,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:23,794 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) [2023-12-16 18:24:23,821 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 [2023-12-16 18:24:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:23,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:24:23,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:23,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:23,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:23,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082549804] [2023-12-16 18:24:23,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082549804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:23,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:23,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:24:23,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644225895] [2023-12-16 18:24:23,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:23,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:24:23,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:23,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:24:23,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:23,993 INFO L87 Difference]: Start difference. First operand 358 states and 509 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:24,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:24,067 INFO L93 Difference]: Finished difference Result 727 states and 1054 transitions. [2023-12-16 18:24:24,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:24:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-16 18:24:24,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:24,070 INFO L225 Difference]: With dead ends: 727 [2023-12-16 18:24:24,070 INFO L226 Difference]: Without dead ends: 639 [2023-12-16 18:24:24,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:24,070 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 222 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:24,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 509 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:24:24,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-12-16 18:24:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 535. [2023-12-16 18:24:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 533 states have (on average 1.4371482176360224) internal successors, (766), 534 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 766 transitions. [2023-12-16 18:24:24,078 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 766 transitions. Word has length 53 [2023-12-16 18:24:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:24,079 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 766 transitions. [2023-12-16 18:24:24,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:24,079 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 766 transitions. [2023-12-16 18:24:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 18:24:24,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:24,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:24,085 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 [2023-12-16 18:24:24,285 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 [2023-12-16 18:24:24,285 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:24,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:24,285 INFO L85 PathProgramCache]: Analyzing trace with hash 296441260, now seen corresponding path program 1 times [2023-12-16 18:24:24,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:24,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445820878] [2023-12-16 18:24:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:24,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:24,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:24,292 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:24,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 18:24:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:24,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:24:24,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:24,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:24,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:24,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445820878] [2023-12-16 18:24:24,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445820878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:24,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:24,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:24:24,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536924272] [2023-12-16 18:24:24,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:24,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:24:24,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:24,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:24:24,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:24,491 INFO L87 Difference]: Start difference. First operand 535 states and 766 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:24,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:24,587 INFO L93 Difference]: Finished difference Result 801 states and 1163 transitions. [2023-12-16 18:24:24,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:24:24,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-16 18:24:24,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:24,589 INFO L225 Difference]: With dead ends: 801 [2023-12-16 18:24:24,589 INFO L226 Difference]: Without dead ends: 549 [2023-12-16 18:24:24,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:24,590 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 217 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:24,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 744 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:24:24,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-12-16 18:24:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 441. [2023-12-16 18:24:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.419134396355353) internal successors, (623), 440 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 623 transitions. [2023-12-16 18:24:24,596 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 623 transitions. Word has length 53 [2023-12-16 18:24:24,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:24,596 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 623 transitions. [2023-12-16 18:24:24,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 623 transitions. [2023-12-16 18:24:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 18:24:24,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:24,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:24,614 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 (10)] Ended with exit code 0 [2023-12-16 18:24:24,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:24,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:24,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:24,798 INFO L85 PathProgramCache]: Analyzing trace with hash 5078122, now seen corresponding path program 1 times [2023-12-16 18:24:24,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:24,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928082915] [2023-12-16 18:24:24,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:24,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:24,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:24,812 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:24,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 18:24:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:24,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:24:24,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:25,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:25,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928082915] [2023-12-16 18:24:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928082915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:25,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:25,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:24:25,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119125021] [2023-12-16 18:24:25,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:25,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:24:25,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:25,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:24:25,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:25,009 INFO L87 Difference]: Start difference. First operand 441 states and 623 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:25,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:25,086 INFO L93 Difference]: Finished difference Result 722 states and 1039 transitions. [2023-12-16 18:24:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:24:25,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-16 18:24:25,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:25,088 INFO L225 Difference]: With dead ends: 722 [2023-12-16 18:24:25,088 INFO L226 Difference]: Without dead ends: 636 [2023-12-16 18:24:25,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:25,089 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 297 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:25,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 584 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:24:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-12-16 18:24:25,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 523. [2023-12-16 18:24:25,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 521 states have (on average 1.4280230326295584) internal successors, (744), 522 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:25,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 744 transitions. [2023-12-16 18:24:25,096 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 744 transitions. Word has length 53 [2023-12-16 18:24:25,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:25,096 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 744 transitions. [2023-12-16 18:24:25,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:25,096 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 744 transitions. [2023-12-16 18:24:25,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 18:24:25,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:25,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:25,111 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 (11)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:25,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:25,299 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:25,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:25,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1921420051, now seen corresponding path program 1 times [2023-12-16 18:24:25,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:25,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507283281] [2023-12-16 18:24:25,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:25,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:25,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:25,317 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:25,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 18:24:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:25,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:24:25,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:25,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:25,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:25,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507283281] [2023-12-16 18:24:25,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507283281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:25,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:25,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 18:24:25,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668933078] [2023-12-16 18:24:25,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:25,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 18:24:25,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 18:24:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-16 18:24:25,808 INFO L87 Difference]: Start difference. First operand 523 states and 744 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:26,325 INFO L93 Difference]: Finished difference Result 675 states and 963 transitions. [2023-12-16 18:24:26,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 18:24:26,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-16 18:24:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:26,327 INFO L225 Difference]: With dead ends: 675 [2023-12-16 18:24:26,327 INFO L226 Difference]: Without dead ends: 557 [2023-12-16 18:24:26,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-12-16 18:24:26,328 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 663 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:26,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 653 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 18:24:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-12-16 18:24:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 507. [2023-12-16 18:24:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 505 states have (on average 1.4237623762376237) internal successors, (719), 506 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 719 transitions. [2023-12-16 18:24:26,334 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 719 transitions. Word has length 54 [2023-12-16 18:24:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:26,334 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 719 transitions. [2023-12-16 18:24:26,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 719 transitions. [2023-12-16 18:24:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 18:24:26,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:26,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:26,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:26,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:26,537 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:26,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:26,538 INFO L85 PathProgramCache]: Analyzing trace with hash 423184428, now seen corresponding path program 1 times [2023-12-16 18:24:26,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:26,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296399670] [2023-12-16 18:24:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:26,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:26,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:26,540 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:26,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 18:24:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:26,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 18:24:26,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:28,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:28,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:28,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296399670] [2023-12-16 18:24:28,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296399670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:28,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:28,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-16 18:24:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161685309] [2023-12-16 18:24:28,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:28,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 18:24:28,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:28,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 18:24:28,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-12-16 18:24:28,536 INFO L87 Difference]: Start difference. First operand 507 states and 719 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:35,236 INFO L93 Difference]: Finished difference Result 1952 states and 2830 transitions. [2023-12-16 18:24:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 18:24:35,236 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-16 18:24:35,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:35,244 INFO L225 Difference]: With dead ends: 1952 [2023-12-16 18:24:35,244 INFO L226 Difference]: Without dead ends: 1527 [2023-12-16 18:24:35,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2023-12-16 18:24:35,245 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 858 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:35,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 2952 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-16 18:24:35,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2023-12-16 18:24:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 512. [2023-12-16 18:24:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 510 states have (on average 1.419607843137255) internal successors, (724), 511 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 724 transitions. [2023-12-16 18:24:35,259 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 724 transitions. Word has length 54 [2023-12-16 18:24:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:35,259 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 724 transitions. [2023-12-16 18:24:35,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 724 transitions. [2023-12-16 18:24:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 18:24:35,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:35,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:35,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:35,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:35,465 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:35,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:35,465 INFO L85 PathProgramCache]: Analyzing trace with hash -19138258, now seen corresponding path program 1 times [2023-12-16 18:24:35,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:35,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660290426] [2023-12-16 18:24:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:35,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:35,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:35,467 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:35,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 18:24:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:35,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:24:35,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:35,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:35,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:35,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660290426] [2023-12-16 18:24:35,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660290426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:35,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:35,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 18:24:35,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767761350] [2023-12-16 18:24:35,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:35,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 18:24:35,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:35,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 18:24:35,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:24:35,810 INFO L87 Difference]: Start difference. First operand 512 states and 724 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:36,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:36,110 INFO L93 Difference]: Finished difference Result 1027 states and 1482 transitions. [2023-12-16 18:24:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 18:24:36,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-16 18:24:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:36,113 INFO L225 Difference]: With dead ends: 1027 [2023-12-16 18:24:36,113 INFO L226 Difference]: Without dead ends: 920 [2023-12-16 18:24:36,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-16 18:24:36,114 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 541 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:36,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 499 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:24:36,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2023-12-16 18:24:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 496. [2023-12-16 18:24:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 494 states have (on average 1.4210526315789473) internal successors, (702), 495 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 702 transitions. [2023-12-16 18:24:36,121 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 702 transitions. Word has length 54 [2023-12-16 18:24:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:36,122 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 702 transitions. [2023-12-16 18:24:36,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 702 transitions. [2023-12-16 18:24:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 18:24:36,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:36,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:36,125 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 (14)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:36,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:36,324 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:36,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:36,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1760940237, now seen corresponding path program 1 times [2023-12-16 18:24:36,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:36,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375633528] [2023-12-16 18:24:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:36,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:36,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:36,326 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:36,354 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 (15)] Waiting until timeout for monitored process [2023-12-16 18:24:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:36,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:24:36,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:36,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:36,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:36,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375633528] [2023-12-16 18:24:36,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375633528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:36,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:36,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 18:24:36,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382945269] [2023-12-16 18:24:36,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:36,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 18:24:36,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:36,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 18:24:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-16 18:24:36,760 INFO L87 Difference]: Start difference. First operand 496 states and 702 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:37,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:37,181 INFO L93 Difference]: Finished difference Result 925 states and 1333 transitions. [2023-12-16 18:24:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 18:24:37,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-16 18:24:37,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:37,183 INFO L225 Difference]: With dead ends: 925 [2023-12-16 18:24:37,183 INFO L226 Difference]: Without dead ends: 918 [2023-12-16 18:24:37,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-12-16 18:24:37,184 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 704 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:37,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 460 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 18:24:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2023-12-16 18:24:37,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 488. [2023-12-16 18:24:37,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.4229979466119096) internal successors, (693), 487 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:37,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 693 transitions. [2023-12-16 18:24:37,192 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 693 transitions. Word has length 55 [2023-12-16 18:24:37,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:37,192 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 693 transitions. [2023-12-16 18:24:37,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:37,193 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 693 transitions. [2023-12-16 18:24:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 18:24:37,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:37,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:37,205 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 (15)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:37,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:37,396 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:37,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash 771114546, now seen corresponding path program 1 times [2023-12-16 18:24:37,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:37,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280747254] [2023-12-16 18:24:37,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:37,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:37,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:37,398 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:37,401 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 (16)] Waiting until timeout for monitored process [2023-12-16 18:24:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:37,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:24:37,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:37,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:37,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:37,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280747254] [2023-12-16 18:24:37,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280747254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:37,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:37,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:24:37,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762651807] [2023-12-16 18:24:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:37,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:24:37,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:37,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:24:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:24:37,483 INFO L87 Difference]: Start difference. First operand 488 states and 693 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:37,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:37,505 INFO L93 Difference]: Finished difference Result 1232 states and 1797 transitions. [2023-12-16 18:24:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:24:37,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-16 18:24:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:37,507 INFO L225 Difference]: With dead ends: 1232 [2023-12-16 18:24:37,507 INFO L226 Difference]: Without dead ends: 820 [2023-12-16 18:24:37,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:24:37,510 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 67 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:37,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 237 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:24:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2023-12-16 18:24:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 818. [2023-12-16 18:24:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 1.4369645042839658) internal successors, (1174), 817 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1174 transitions. [2023-12-16 18:24:37,528 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1174 transitions. Word has length 75 [2023-12-16 18:24:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:37,528 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1174 transitions. [2023-12-16 18:24:37,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1174 transitions. [2023-12-16 18:24:37,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 18:24:37,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:37,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:37,533 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 (16)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:37,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:37,732 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:37,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1959476458, now seen corresponding path program 1 times [2023-12-16 18:24:37,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:37,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49973808] [2023-12-16 18:24:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:37,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:37,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:37,734 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:37,735 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 (17)] Waiting until timeout for monitored process [2023-12-16 18:24:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:37,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:24:37,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:37,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:37,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:37,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49973808] [2023-12-16 18:24:37,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49973808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:37,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:37,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:24:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442678911] [2023-12-16 18:24:37,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:37,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:24:37,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:37,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:24:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:24:37,828 INFO L87 Difference]: Start difference. First operand 818 states and 1174 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:37,842 INFO L93 Difference]: Finished difference Result 2142 states and 3120 transitions. [2023-12-16 18:24:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:24:37,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-16 18:24:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:37,845 INFO L225 Difference]: With dead ends: 2142 [2023-12-16 18:24:37,845 INFO L226 Difference]: Without dead ends: 1400 [2023-12-16 18:24:37,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:24:37,849 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:37,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 235 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:24:37,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-12-16 18:24:37,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1398. [2023-12-16 18:24:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 1.435934144595562) internal successors, (2006), 1397 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:37,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 2006 transitions. [2023-12-16 18:24:37,865 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 2006 transitions. Word has length 76 [2023-12-16 18:24:37,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:37,865 INFO L495 AbstractCegarLoop]: Abstraction has 1398 states and 2006 transitions. [2023-12-16 18:24:37,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:37,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 2006 transitions. [2023-12-16 18:24:37,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 18:24:37,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:37,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:37,882 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 (17)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:38,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:38,070 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:38,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2082677025, now seen corresponding path program 1 times [2023-12-16 18:24:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:38,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883484578] [2023-12-16 18:24:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:38,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:38,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:38,071 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:38,079 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 (18)] Waiting until timeout for monitored process [2023-12-16 18:24:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:38,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 18:24:38,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:38,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:38,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:38,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883484578] [2023-12-16 18:24:38,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883484578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:38,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:38,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:24:38,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734021563] [2023-12-16 18:24:38,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:38,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:24:38,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:38,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:24:38,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:24:38,211 INFO L87 Difference]: Start difference. First operand 1398 states and 2006 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:38,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:38,268 INFO L93 Difference]: Finished difference Result 3602 states and 5180 transitions. [2023-12-16 18:24:38,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 18:24:38,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-16 18:24:38,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:38,273 INFO L225 Difference]: With dead ends: 3602 [2023-12-16 18:24:38,273 INFO L226 Difference]: Without dead ends: 2280 [2023-12-16 18:24:38,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:24:38,275 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 40 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:38,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 284 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:24:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2023-12-16 18:24:38,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2246. [2023-12-16 18:24:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 2245 states have (on average 1.3995545657015591) internal successors, (3142), 2245 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:38,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 3142 transitions. [2023-12-16 18:24:38,299 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 3142 transitions. Word has length 77 [2023-12-16 18:24:38,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:38,299 INFO L495 AbstractCegarLoop]: Abstraction has 2246 states and 3142 transitions. [2023-12-16 18:24:38,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:38,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 3142 transitions. [2023-12-16 18:24:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 18:24:38,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:38,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:38,304 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 (18)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:38,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:38,503 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:38,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:38,503 INFO L85 PathProgramCache]: Analyzing trace with hash 343334696, now seen corresponding path program 1 times [2023-12-16 18:24:38,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:38,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661679530] [2023-12-16 18:24:38,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:38,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:38,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:38,504 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:38,529 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 (19)] Waiting until timeout for monitored process [2023-12-16 18:24:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:38,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:24:38,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:38,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:38,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661679530] [2023-12-16 18:24:38,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661679530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:38,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:38,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:24:38,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261782759] [2023-12-16 18:24:38,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:38,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:24:38,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:38,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:24:38,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:24:38,634 INFO L87 Difference]: Start difference. First operand 2246 states and 3142 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:38,686 INFO L93 Difference]: Finished difference Result 4200 states and 5824 transitions. [2023-12-16 18:24:38,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 18:24:38,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-16 18:24:38,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:38,695 INFO L225 Difference]: With dead ends: 4200 [2023-12-16 18:24:38,695 INFO L226 Difference]: Without dead ends: 4198 [2023-12-16 18:24:38,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 18:24:38,697 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 202 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:38,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 498 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:24:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2023-12-16 18:24:38,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 2390. [2023-12-16 18:24:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2389 states have (on average 1.3721222268731688) internal successors, (3278), 2389 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3278 transitions. [2023-12-16 18:24:38,734 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3278 transitions. Word has length 78 [2023-12-16 18:24:38,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:38,734 INFO L495 AbstractCegarLoop]: Abstraction has 2390 states and 3278 transitions. [2023-12-16 18:24:38,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:38,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3278 transitions. [2023-12-16 18:24:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-16 18:24:38,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:38,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:38,760 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 (19)] Ended with exit code 0 [2023-12-16 18:24:38,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:38,938 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:38,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash 198534444, now seen corresponding path program 1 times [2023-12-16 18:24:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:38,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861154187] [2023-12-16 18:24:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:38,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:38,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:38,940 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:38,966 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 (20)] Waiting until timeout for monitored process [2023-12-16 18:24:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:39,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:24:39,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:39,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:39,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:39,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861154187] [2023-12-16 18:24:39,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861154187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:39,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:39,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:24:39,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692163311] [2023-12-16 18:24:39,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:39,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:24:39,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:39,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:24:39,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:24:39,050 INFO L87 Difference]: Start difference. First operand 2390 states and 3278 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:39,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:39,071 INFO L93 Difference]: Finished difference Result 4880 states and 6756 transitions. [2023-12-16 18:24:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:24:39,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-16 18:24:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:39,092 INFO L225 Difference]: With dead ends: 4880 [2023-12-16 18:24:39,092 INFO L226 Difference]: Without dead ends: 3436 [2023-12-16 18:24:39,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:24:39,095 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 70 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:39,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 241 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:24:39,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2023-12-16 18:24:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3434. [2023-12-16 18:24:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3433 states have (on average 1.3591610836003496) internal successors, (4666), 3433 states have internal predecessors, (4666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 4666 transitions. [2023-12-16 18:24:39,137 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 4666 transitions. Word has length 79 [2023-12-16 18:24:39,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:39,137 INFO L495 AbstractCegarLoop]: Abstraction has 3434 states and 4666 transitions. [2023-12-16 18:24:39,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 4666 transitions. [2023-12-16 18:24:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 18:24:39,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:39,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:39,158 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 (20)] Ended with exit code 0 [2023-12-16 18:24:39,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:39,342 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:39,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:39,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1558547986, now seen corresponding path program 1 times [2023-12-16 18:24:39,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:39,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15332889] [2023-12-16 18:24:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:39,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:39,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:39,343 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:39,345 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 (21)] Waiting until timeout for monitored process [2023-12-16 18:24:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:39,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:24:39,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:39,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:24:39,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:39,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15332889] [2023-12-16 18:24:39,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15332889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:24:39,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:24:39,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:24:39,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60817377] [2023-12-16 18:24:39,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:24:39,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:24:39,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:39,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:24:39,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:24:39,432 INFO L87 Difference]: Start difference. First operand 3434 states and 4666 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:39,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:39,450 INFO L93 Difference]: Finished difference Result 5972 states and 8159 transitions. [2023-12-16 18:24:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:24:39,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-16 18:24:39,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:39,456 INFO L225 Difference]: With dead ends: 5972 [2023-12-16 18:24:39,456 INFO L226 Difference]: Without dead ends: 2618 [2023-12-16 18:24:39,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:24:39,459 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 57 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:39,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 233 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:24:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2023-12-16 18:24:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2616. [2023-12-16 18:24:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 2615 states have (on average 1.3518164435946463) internal successors, (3535), 2615 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 3535 transitions. [2023-12-16 18:24:39,485 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 3535 transitions. Word has length 100 [2023-12-16 18:24:39,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:39,486 INFO L495 AbstractCegarLoop]: Abstraction has 2616 states and 3535 transitions. [2023-12-16 18:24:39,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:39,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 3535 transitions. [2023-12-16 18:24:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 18:24:39,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:39,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:39,490 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 (21)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:39,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:39,690 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:39,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:39,690 INFO L85 PathProgramCache]: Analyzing trace with hash -742776548, now seen corresponding path program 1 times [2023-12-16 18:24:39,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:39,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961351221] [2023-12-16 18:24:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:39,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:39,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:39,692 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:39,693 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 (22)] Waiting until timeout for monitored process [2023-12-16 18:24:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:39,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:24:39,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:40,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:24:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:40,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:40,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961351221] [2023-12-16 18:24:40,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961351221] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:24:40,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:24:40,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-16 18:24:40,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524305965] [2023-12-16 18:24:40,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:24:40,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 18:24:40,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:40,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 18:24:40,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2023-12-16 18:24:40,751 INFO L87 Difference]: Start difference. First operand 2616 states and 3535 transitions. Second operand has 26 states, 26 states have (on average 7.0) internal successors, (182), 25 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:48,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:48,253 INFO L93 Difference]: Finished difference Result 15522 states and 20552 transitions. [2023-12-16 18:24:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-16 18:24:48,254 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.0) internal successors, (182), 25 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-16 18:24:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:48,282 INFO L225 Difference]: With dead ends: 15522 [2023-12-16 18:24:48,282 INFO L226 Difference]: Without dead ends: 13040 [2023-12-16 18:24:48,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2939 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2214, Invalid=8498, Unknown=0, NotChecked=0, Total=10712 [2023-12-16 18:24:48,289 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 4356 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4356 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:48,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4356 Valid, 1333 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 18:24:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13040 states. [2023-12-16 18:24:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13040 to 2616. [2023-12-16 18:24:48,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 2615 states have (on average 1.344168260038241) internal successors, (3515), 2615 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:48,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 3515 transitions. [2023-12-16 18:24:48,380 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 3515 transitions. Word has length 100 [2023-12-16 18:24:48,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:48,380 INFO L495 AbstractCegarLoop]: Abstraction has 2616 states and 3515 transitions. [2023-12-16 18:24:48,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.0) internal successors, (182), 25 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:48,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 3515 transitions. [2023-12-16 18:24:48,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 18:24:48,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:48,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:48,400 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 (22)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:48,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:48,585 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:48,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1970825707, now seen corresponding path program 1 times [2023-12-16 18:24:48,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:48,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417296696] [2023-12-16 18:24:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:48,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:48,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:48,586 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:48,587 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 (23)] Waiting until timeout for monitored process [2023-12-16 18:24:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:48,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 18:24:48,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:49,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:24:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:49,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417296696] [2023-12-16 18:24:49,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417296696] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:24:49,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:24:49,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-16 18:24:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273221470] [2023-12-16 18:24:49,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:24:49,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 18:24:49,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:49,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 18:24:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2023-12-16 18:24:49,629 INFO L87 Difference]: Start difference. First operand 2616 states and 3515 transitions. Second operand has 24 states, 24 states have (on average 7.833333333333333) internal successors, (188), 23 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:55,231 INFO L93 Difference]: Finished difference Result 12578 states and 16822 transitions. [2023-12-16 18:24:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-16 18:24:55,231 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.833333333333333) internal successors, (188), 23 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-16 18:24:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:55,242 INFO L225 Difference]: With dead ends: 12578 [2023-12-16 18:24:55,242 INFO L226 Difference]: Without dead ends: 10071 [2023-12-16 18:24:55,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1413, Invalid=4439, Unknown=0, NotChecked=0, Total=5852 [2023-12-16 18:24:55,246 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 4063 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4063 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:55,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4063 Valid, 1690 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 18:24:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10071 states. [2023-12-16 18:24:55,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10071 to 2635. [2023-12-16 18:24:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2634 states have (on average 1.3397873955960515) internal successors, (3529), 2634 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3529 transitions. [2023-12-16 18:24:55,286 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3529 transitions. Word has length 101 [2023-12-16 18:24:55,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:55,286 INFO L495 AbstractCegarLoop]: Abstraction has 2635 states and 3529 transitions. [2023-12-16 18:24:55,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.833333333333333) internal successors, (188), 23 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3529 transitions. [2023-12-16 18:24:55,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 18:24:55,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:55,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:55,299 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 (23)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:55,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:55,490 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:55,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:55,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1954776131, now seen corresponding path program 1 times [2023-12-16 18:24:55,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:55,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843842193] [2023-12-16 18:24:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:55,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:55,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:55,492 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:55,495 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 (24)] Waiting until timeout for monitored process [2023-12-16 18:24:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:55,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:24:55,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:56,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:24:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:56,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:56,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843842193] [2023-12-16 18:24:56,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843842193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:24:56,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:24:56,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 18:24:56,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420947229] [2023-12-16 18:24:56,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:24:56,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:24:56,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:24:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:24:56,288 INFO L87 Difference]: Start difference. First operand 2635 states and 3529 transitions. Second operand has 16 states, 16 states have (on average 12.1875) internal successors, (195), 15 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:24:58,726 INFO L93 Difference]: Finished difference Result 11913 states and 15882 transitions. [2023-12-16 18:24:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-16 18:24:58,726 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.1875) internal successors, (195), 15 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-16 18:24:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:24:58,737 INFO L225 Difference]: With dead ends: 11913 [2023-12-16 18:24:58,737 INFO L226 Difference]: Without dead ends: 9371 [2023-12-16 18:24:58,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1256 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1207, Invalid=3485, Unknown=0, NotChecked=0, Total=4692 [2023-12-16 18:24:58,741 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1271 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 18:24:58,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 852 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 18:24:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9371 states. [2023-12-16 18:24:58,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9371 to 2775. [2023-12-16 18:24:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2774 states have (on average 1.3298485940879596) internal successors, (3689), 2774 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3689 transitions. [2023-12-16 18:24:58,780 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3689 transitions. Word has length 101 [2023-12-16 18:24:58,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:24:58,780 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 3689 transitions. [2023-12-16 18:24:58,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.1875) internal successors, (195), 15 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:24:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3689 transitions. [2023-12-16 18:24:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 18:24:58,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:24:58,781 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:24:58,784 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 (24)] Forceful destruction successful, exit code 0 [2023-12-16 18:24:58,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:58,984 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:24:58,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:24:58,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1283612984, now seen corresponding path program 1 times [2023-12-16 18:24:58,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:24:58,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444353392] [2023-12-16 18:24:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:24:58,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:24:58,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:24:58,986 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:24:58,995 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 (25)] Waiting until timeout for monitored process [2023-12-16 18:24:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:24:59,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:24:59,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:24:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:59,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:24:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:24:59,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:24:59,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444353392] [2023-12-16 18:24:59,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444353392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:24:59,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:24:59,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-12-16 18:24:59,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229924907] [2023-12-16 18:24:59,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:24:59,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 18:24:59,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:24:59,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 18:24:59,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-12-16 18:24:59,966 INFO L87 Difference]: Start difference. First operand 2775 states and 3689 transitions. Second operand has 23 states, 23 states have (on average 8.304347826086957) internal successors, (191), 23 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:25:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:25:05,578 INFO L93 Difference]: Finished difference Result 34083 states and 44997 transitions. [2023-12-16 18:25:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-16 18:25:05,579 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.304347826086957) internal successors, (191), 23 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-16 18:25:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:25:05,606 INFO L225 Difference]: With dead ends: 34083 [2023-12-16 18:25:05,606 INFO L226 Difference]: Without dead ends: 31401 [2023-12-16 18:25:05,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1545, Invalid=4935, Unknown=0, NotChecked=0, Total=6480 [2023-12-16 18:25:05,614 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 2481 mSDsluCounter, 3121 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2481 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 18:25:05,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2481 Valid, 3333 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 18:25:05,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31401 states. [2023-12-16 18:25:05,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31401 to 10696. [2023-12-16 18:25:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10696 states, 10695 states have (on average 1.3294997662459094) internal successors, (14219), 10695 states have internal predecessors, (14219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:25:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10696 states to 10696 states and 14219 transitions. [2023-12-16 18:25:05,800 INFO L78 Accepts]: Start accepts. Automaton has 10696 states and 14219 transitions. Word has length 102 [2023-12-16 18:25:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:25:05,800 INFO L495 AbstractCegarLoop]: Abstraction has 10696 states and 14219 transitions. [2023-12-16 18:25:05,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.304347826086957) internal successors, (191), 23 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:25:05,801 INFO L276 IsEmpty]: Start isEmpty. Operand 10696 states and 14219 transitions. [2023-12-16 18:25:05,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 18:25:05,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:25:05,803 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:25:05,820 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 (25)] Forceful destruction successful, exit code 0 [2023-12-16 18:25:06,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:25:06,007 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:25:06,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:25:06,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1740742798, now seen corresponding path program 1 times [2023-12-16 18:25:06,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:25:06,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80020594] [2023-12-16 18:25:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:25:06,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:25:06,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:25:06,015 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:25:06,017 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 (26)] Waiting until timeout for monitored process [2023-12-16 18:25:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:25:06,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:25:06,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:25:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:25:06,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:25:06,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:25:06,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80020594] [2023-12-16 18:25:06,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80020594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:25:06,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:25:06,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:25:06,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897813327] [2023-12-16 18:25:06,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:25:06,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:25:06,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:25:06,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:25:06,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:25:06,125 INFO L87 Difference]: Start difference. First operand 10696 states and 14219 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:25:06,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:25:06,156 INFO L93 Difference]: Finished difference Result 16010 states and 21285 transitions. [2023-12-16 18:25:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:25:06,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-16 18:25:06,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:25:06,161 INFO L225 Difference]: With dead ends: 16010 [2023-12-16 18:25:06,161 INFO L226 Difference]: Without dead ends: 5518 [2023-12-16 18:25:06,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:25:06,172 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 50 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:25:06,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 213 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:25:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2023-12-16 18:25:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5336. [2023-12-16 18:25:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5336 states, 5335 states have (on average 1.2924086223055296) internal successors, (6895), 5335 states have internal predecessors, (6895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:25:06,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 6895 transitions. [2023-12-16 18:25:06,275 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 6895 transitions. Word has length 102 [2023-12-16 18:25:06,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:25:06,275 INFO L495 AbstractCegarLoop]: Abstraction has 5336 states and 6895 transitions. [2023-12-16 18:25:06,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:25:06,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 6895 transitions. [2023-12-16 18:25:06,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 18:25:06,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:25:06,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:25:06,294 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 (26)] Forceful destruction successful, exit code 0 [2023-12-16 18:25:06,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:25:06,492 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:25:06,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:25:06,492 INFO L85 PathProgramCache]: Analyzing trace with hash -227589618, now seen corresponding path program 1 times [2023-12-16 18:25:06,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:25:06,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895382910] [2023-12-16 18:25:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:25:06,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:25:06,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:25:06,493 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 18:25:06,522 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 (27)] Waiting until timeout for monitored process [2023-12-16 18:25:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:25:06,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 18:25:06,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:25:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:25:09,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:25:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:25:10,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:25:10,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895382910] [2023-12-16 18:25:10,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895382910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:25:10,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:25:10,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 53 [2023-12-16 18:25:10,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354828669] [2023-12-16 18:25:10,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:25:10,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-16 18:25:10,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:25:10,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-16 18:25:10,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=2437, Unknown=0, NotChecked=0, Total=2756 [2023-12-16 18:25:10,998 INFO L87 Difference]: Start difference. First operand 5336 states and 6895 transitions. Second operand has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 18:25:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-16 18:25:30,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6493 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=3364, Invalid=18688, Unknown=0, NotChecked=0, Total=22052 [2023-12-16 18:25:30,984 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 3331 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 18:25:30,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3331 Valid, 1818 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1754 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 18:25:30,985 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 18:25:30,988 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 (27)] Forceful destruction successful, exit code 0 [2023-12-16 18:25:31,005 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 (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 18:25:31,005 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 18:25:31,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:25:31,188 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (5336states) and FLOYD_HOARE automaton (currently 99 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 149 known predicates. [2023-12-16 18:25:31,190 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 18:25:31,204 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:25:31,206 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 18:25:31,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:25:31 BoogieIcfgContainer [2023-12-16 18:25:31,220 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 18:25:31,221 INFO L158 Benchmark]: Toolchain (without parser) took 73990.12ms. Allocated memory was 192.9MB in the beginning and 587.2MB in the end (delta: 394.3MB). Free memory was 154.5MB in the beginning and 344.9MB in the end (delta: -190.4MB). Peak memory consumption was 204.9MB. Max. memory is 8.0GB. [2023-12-16 18:25:31,221 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 192.9MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 18:25:31,221 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.91ms. Allocated memory is still 192.9MB. Free memory was 154.1MB in the beginning and 134.6MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 18:25:31,221 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.67ms. Allocated memory is still 192.9MB. Free memory was 134.6MB in the beginning and 132.1MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 18:25:31,221 INFO L158 Benchmark]: Boogie Preprocessor took 34.62ms. Allocated memory is still 192.9MB. Free memory was 132.1MB in the beginning and 128.6MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 18:25:31,223 INFO L158 Benchmark]: RCFGBuilder took 561.32ms. Allocated memory was 192.9MB in the beginning and 234.9MB in the end (delta: 41.9MB). Free memory was 128.6MB in the beginning and 197.1MB in the end (delta: -68.5MB). Peak memory consumption was 30.1MB. Max. memory is 8.0GB. [2023-12-16 18:25:31,223 INFO L158 Benchmark]: TraceAbstraction took 73001.44ms. Allocated memory was 234.9MB in the beginning and 587.2MB in the end (delta: 352.3MB). Free memory was 196.7MB in the beginning and 344.9MB in the end (delta: -148.2MB). Peak memory consumption was 204.2MB. Max. memory is 8.0GB. [2023-12-16 18:25:31,231 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 192.9MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 324.91ms. Allocated memory is still 192.9MB. Free memory was 154.1MB in the beginning and 134.6MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.67ms. Allocated memory is still 192.9MB. Free memory was 134.6MB in the beginning and 132.1MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.62ms. Allocated memory is still 192.9MB. Free memory was 132.1MB in the beginning and 128.6MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 561.32ms. Allocated memory was 192.9MB in the beginning and 234.9MB in the end (delta: 41.9MB). Free memory was 128.6MB in the beginning and 197.1MB in the end (delta: -68.5MB). Peak memory consumption was 30.1MB. Max. memory is 8.0GB. * TraceAbstraction took 73001.44ms. Allocated memory was 234.9MB in the beginning and 587.2MB in the end (delta: 352.3MB). Free memory was 196.7MB in the beginning and 344.9MB in the end (delta: -148.2MB). Peak memory consumption was 204.2MB. 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: 377]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 377). Cancelled while NwaCegarLoop was constructing difference of abstraction (5336states) and FLOYD_HOARE automaton (currently 99 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 149 known predicates. - TimeoutResultAtElement [Line: 580]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 580). Cancelled while NwaCegarLoop was constructing difference of abstraction (5336states) and FLOYD_HOARE automaton (currently 99 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 149 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 104 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 73.0s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 51.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22931 SdHoareTripleChecker+Valid, 16.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22931 mSDsluCounter, 18870 SdHoareTripleChecker+Invalid, 15.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14950 mSDsCounter, 297 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10113 IncrementalHoareTripleChecker+Invalid, 10410 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 297 mSolverCounterUnsat, 3920 mSDtfsCounter, 10113 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2690 GetRequests, 2066 SyntacticMatches, 0 SemanticMatches, 623 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13745 ImplicationChecksByTransitivity, 39.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10696occurred in iteration=24, InterpolantAutomatonStates: 400, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 25 MinimizatonAttempts, 49552 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 13.3s InterpolantComputationTime, 1812 NumberOfCodeBlocks, 1812 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2287 ConstructedInterpolants, 669 QuantifiedInterpolants, 25982 SizeOfPredicates, 117 NumberOfNonLiveVariables, 4392 ConjunctsInSsa, 196 ConjunctsInUnsatCore, 31 InterpolantComputations, 21 PerfectInterpolantSequences, 106/148 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