/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/recursive/Ackermann03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:43:00,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:43:00,504 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 17:43:00,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:43:00,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:43:00,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:43:00,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:43:00,531 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:43:00,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:43:00,534 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:43:00,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:43:00,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:43:00,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:43:00,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:43:00,536 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:43:00,537 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:43:00,537 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:43:00,537 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:43:00,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:43:00,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:43:00,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:43:00,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:43:00,539 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:43:00,539 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:43:00,539 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:43:00,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:43:00,539 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:43:00,539 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:43:00,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:43:00,540 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:43:00,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:43:00,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:43:00,541 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:43:00,541 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:43:00,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:43:00,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:43:00,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:43:00,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:43:00,541 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:43:00,541 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:43:00,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:43:00,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:43:00,542 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:43:00,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:43:00,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:43:00,542 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:43:00,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:43:00,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:43:00,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:43:00,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:43:00,726 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:43:00,727 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:43:00,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann03.c [2023-12-16 17:43:01,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:43:01,972 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:43:01,972 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann03.c [2023-12-16 17:43:01,978 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6892df2c2/b48276d6c07f4f519fa0e8cb4c377517/FLAGc03f5c5aa [2023-12-16 17:43:01,992 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6892df2c2/b48276d6c07f4f519fa0e8cb4c377517 [2023-12-16 17:43:01,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:43:01,996 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:43:01,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:43:01,998 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:43:02,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:43:02,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:43:01" (1/1) ... [2023-12-16 17:43:02,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceca4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02, skipping insertion in model container [2023-12-16 17:43:02,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:43:01" (1/1) ... [2023-12-16 17:43:02,018 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:43:02,140 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann03.c[1168,1181] [2023-12-16 17:43:02,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:43:02,157 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:43:02,171 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann03.c[1168,1181] [2023-12-16 17:43:02,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:43:02,183 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:43:02,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02 WrapperNode [2023-12-16 17:43:02,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:43:02,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:43:02,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:43:02,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:43:02,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,206 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-12-16 17:43:02,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:43:02,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:43:02,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:43:02,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:43:02,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,223 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,233 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 17:43:02,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:43:02,252 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:43:02,252 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:43:02,252 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:43:02,253 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (1/1) ... [2023-12-16 17:43:02,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:43:02,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:43:02,289 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 17:43:02,307 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 17:43:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:43:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:43:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:43:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:43:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2023-12-16 17:43:02,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2023-12-16 17:43:02,362 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:43:02,365 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:43:02,507 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:43:02,530 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:43:02,530 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 17:43:02,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:43:02 BoogieIcfgContainer [2023-12-16 17:43:02,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:43:02,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:43:02,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:43:02,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:43:02,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:43:01" (1/3) ... [2023-12-16 17:43:02,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f87b527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:43:02, skipping insertion in model container [2023-12-16 17:43:02,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:02" (2/3) ... [2023-12-16 17:43:02,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f87b527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:43:02, skipping insertion in model container [2023-12-16 17:43:02,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:43:02" (3/3) ... [2023-12-16 17:43:02,539 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2023-12-16 17:43:02,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:43:02,551 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:43:02,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:43:02,591 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;@2fc10057, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:43:02,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:43:02,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 17:43:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-16 17:43:02,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:02,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:02,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:02,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1592058167, now seen corresponding path program 1 times [2023-12-16 17:43:02,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:02,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195649632] [2023-12-16 17:43:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:43:02,612 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 17:43:02,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:02,614 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 17:43:02,643 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 17:43:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:02,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:43:02,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:02,749 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 17:43:02,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:43:02,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:02,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195649632] [2023-12-16 17:43:02,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195649632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:43:02,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:43:02,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:43:02,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018946128] [2023-12-16 17:43:02,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:43:02,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:43:02,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:43:02,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:43:02,781 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:43:02,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:02,890 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2023-12-16 17:43:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:43:02,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-16 17:43:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:02,897 INFO L225 Difference]: With dead ends: 43 [2023-12-16 17:43:02,898 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 17:43:02,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:43:02,903 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:02,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 49 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:43:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 17:43:02,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-16 17:43:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-16 17:43:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2023-12-16 17:43:02,933 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 11 [2023-12-16 17:43:02,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:02,933 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-12-16 17:43:02,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:43:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-12-16 17:43:02,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 17:43:02,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:02,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:02,942 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 17:43:03,139 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 17:43:03,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:03,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1453353420, now seen corresponding path program 1 times [2023-12-16 17:43:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803065624] [2023-12-16 17:43:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:43:03,141 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 17:43:03,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:03,152 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 17:43:03,154 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 (3)] Waiting until timeout for monitored process [2023-12-16 17:43:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:03,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:43:03,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:43:03,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:43:03,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:03,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803065624] [2023-12-16 17:43:03,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803065624] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:03,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:03,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 17:43:03,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272424117] [2023-12-16 17:43:03,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:03,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 17:43:03,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:03,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 17:43:03,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:43:03,343 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 17:43:03,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:03,435 INFO L93 Difference]: Finished difference Result 58 states and 103 transitions. [2023-12-16 17:43:03,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:43:03,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2023-12-16 17:43:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:03,437 INFO L225 Difference]: With dead ends: 58 [2023-12-16 17:43:03,437 INFO L226 Difference]: Without dead ends: 36 [2023-12-16 17:43:03,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:43:03,438 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:03,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 63 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:43:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-16 17:43:03,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-16 17:43:03,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (25), 10 states have call predecessors, (25), 8 states have call successors, (25) [2023-12-16 17:43:03,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 59 transitions. [2023-12-16 17:43:03,447 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 59 transitions. Word has length 18 [2023-12-16 17:43:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:03,447 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 59 transitions. [2023-12-16 17:43:03,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 17:43:03,447 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 59 transitions. [2023-12-16 17:43:03,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-16 17:43:03,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:03,449 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:03,477 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 17:43:03,651 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 17:43:03,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:03,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:03,653 INFO L85 PathProgramCache]: Analyzing trace with hash 229730088, now seen corresponding path program 1 times [2023-12-16 17:43:03,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:03,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664060565] [2023-12-16 17:43:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:43:03,653 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 17:43:03,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:03,669 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 17:43:03,672 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 17:43:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:03,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:43:03,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 17:43:03,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 17:43:03,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664060565] [2023-12-16 17:43:03,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664060565] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:03,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:03,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2023-12-16 17:43:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276750030] [2023-12-16 17:43:03,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:03,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 17:43:03,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 17:43:03,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:43:03,997 INFO L87 Difference]: Start difference. First operand 36 states and 59 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-16 17:43:04,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:04,143 INFO L93 Difference]: Finished difference Result 99 states and 234 transitions. [2023-12-16 17:43:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:43:04,145 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 6 states have call successors, (9) Word has length 42 [2023-12-16 17:43:04,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:04,148 INFO L225 Difference]: With dead ends: 99 [2023-12-16 17:43:04,148 INFO L226 Difference]: Without dead ends: 65 [2023-12-16 17:43:04,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:43:04,150 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:04,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 82 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:43:04,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-16 17:43:04,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2023-12-16 17:43:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 13 states have call successors, (13), 4 states have call predecessors, (13), 9 states have return successors, (41), 18 states have call predecessors, (41), 13 states have call successors, (41) [2023-12-16 17:43:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 96 transitions. [2023-12-16 17:43:04,163 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 96 transitions. Word has length 42 [2023-12-16 17:43:04,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:04,163 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 96 transitions. [2023-12-16 17:43:04,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-16 17:43:04,163 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 96 transitions. [2023-12-16 17:43:04,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 17:43:04,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:04,166 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:04,171 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 17:43:04,368 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 17:43:04,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:04,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1936097191, now seen corresponding path program 2 times [2023-12-16 17:43:04,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:04,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175875817] [2023-12-16 17:43:04,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:43:04,370 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 17:43:04,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:04,371 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 17:43:04,372 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 17:43:04,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:43:04,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:04,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 17:43:04,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:04,598 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 132 proven. 43 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-16 17:43:04,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 68 proven. 79 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-16 17:43:05,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:05,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175875817] [2023-12-16 17:43:05,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175875817] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:05,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:05,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 24 [2023-12-16 17:43:05,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345846785] [2023-12-16 17:43:05,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:05,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 17:43:05,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 17:43:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-12-16 17:43:05,257 INFO L87 Difference]: Start difference. First operand 59 states and 96 transitions. Second operand has 24 states, 20 states have (on average 2.3) internal successors, (46), 14 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 10 states have return successors, (19), 13 states have call predecessors, (19), 7 states have call successors, (19) [2023-12-16 17:43:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:06,885 INFO L93 Difference]: Finished difference Result 367 states and 1049 transitions. [2023-12-16 17:43:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-16 17:43:06,885 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 2.3) internal successors, (46), 14 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 10 states have return successors, (19), 13 states have call predecessors, (19), 7 states have call successors, (19) Word has length 75 [2023-12-16 17:43:06,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:06,895 INFO L225 Difference]: With dead ends: 367 [2023-12-16 17:43:06,895 INFO L226 Difference]: Without dead ends: 312 [2023-12-16 17:43:06,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=913, Invalid=4489, Unknown=0, NotChecked=0, Total=5402 [2023-12-16 17:43:06,904 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:06,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 208 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 17:43:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-16 17:43:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 138. [2023-12-16 17:43:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 81 states have (on average 1.0740740740740742) internal successors, (87), 84 states have internal predecessors, (87), 23 states have call successors, (23), 4 states have call predecessors, (23), 33 states have return successors, (216), 49 states have call predecessors, (216), 23 states have call successors, (216) [2023-12-16 17:43:06,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 326 transitions. [2023-12-16 17:43:06,964 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 326 transitions. Word has length 75 [2023-12-16 17:43:06,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:06,964 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 326 transitions. [2023-12-16 17:43:06,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 2.3) internal successors, (46), 14 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 10 states have return successors, (19), 13 states have call predecessors, (19), 7 states have call successors, (19) [2023-12-16 17:43:06,965 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 326 transitions. [2023-12-16 17:43:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-16 17:43:06,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:06,971 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 16, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:06,976 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 17:43:07,173 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 17:43:07,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:07,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:07,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1648110594, now seen corresponding path program 3 times [2023-12-16 17:43:07,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:07,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083515537] [2023-12-16 17:43:07,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:43:07,175 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 17:43:07,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:07,177 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 17:43:07,179 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 17:43:07,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-16 17:43:07,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:07,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 17:43:07,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1570 backedges. 593 proven. 75 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2023-12-16 17:43:07,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1570 backedges. 513 proven. 93 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2023-12-16 17:43:08,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:08,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083515537] [2023-12-16 17:43:08,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083515537] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:08,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:08,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 25 [2023-12-16 17:43:08,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466340139] [2023-12-16 17:43:08,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:08,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 17:43:08,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:08,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 17:43:08,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2023-12-16 17:43:08,263 INFO L87 Difference]: Start difference. First operand 138 states and 326 transitions. Second operand has 25 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 15 states have internal predecessors, (49), 10 states have call successors, (14), 2 states have call predecessors, (14), 11 states have return successors, (24), 14 states have call predecessors, (24), 10 states have call successors, (24) [2023-12-16 17:43:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:10,065 INFO L93 Difference]: Finished difference Result 461 states and 1485 transitions. [2023-12-16 17:43:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-16 17:43:10,066 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 15 states have internal predecessors, (49), 10 states have call successors, (14), 2 states have call predecessors, (14), 11 states have return successors, (24), 14 states have call predecessors, (24), 10 states have call successors, (24) Word has length 168 [2023-12-16 17:43:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:10,070 INFO L225 Difference]: With dead ends: 461 [2023-12-16 17:43:10,070 INFO L226 Difference]: Without dead ends: 283 [2023-12-16 17:43:10,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1272, Invalid=6918, Unknown=0, NotChecked=0, Total=8190 [2023-12-16 17:43:10,077 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 34 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:10,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 224 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:43:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-16 17:43:10,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 161. [2023-12-16 17:43:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 97 states have (on average 1.1030927835051547) internal successors, (107), 100 states have internal predecessors, (107), 26 states have call successors, (26), 7 states have call predecessors, (26), 37 states have return successors, (211), 53 states have call predecessors, (211), 26 states have call successors, (211) [2023-12-16 17:43:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 344 transitions. [2023-12-16 17:43:10,098 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 344 transitions. Word has length 168 [2023-12-16 17:43:10,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:10,099 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 344 transitions. [2023-12-16 17:43:10,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 15 states have internal predecessors, (49), 10 states have call successors, (14), 2 states have call predecessors, (14), 11 states have return successors, (24), 14 states have call predecessors, (24), 10 states have call successors, (24) [2023-12-16 17:43:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 344 transitions. [2023-12-16 17:43:10,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-16 17:43:10,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:10,101 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 17, 12, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:10,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 17:43:10,304 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 17:43:10,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:10,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash -957236747, now seen corresponding path program 4 times [2023-12-16 17:43:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953025089] [2023-12-16 17:43:10,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:43:10,306 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 17:43:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:10,306 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 17:43:10,311 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 17:43:10,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:43:10,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:10,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 17:43:10,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 1044 proven. 115 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2023-12-16 17:43:10,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 165 proven. 590 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-16 17:43:11,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953025089] [2023-12-16 17:43:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953025089] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:11,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:11,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 27 [2023-12-16 17:43:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617006924] [2023-12-16 17:43:11,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:11,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-16 17:43:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:11,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-16 17:43:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2023-12-16 17:43:11,432 INFO L87 Difference]: Start difference. First operand 161 states and 344 transitions. Second operand has 27 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 17 states have internal predecessors, (58), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 15 states have call predecessors, (28), 12 states have call successors, (28) [2023-12-16 17:43:13,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:13,429 INFO L93 Difference]: Finished difference Result 646 states and 2017 transitions. [2023-12-16 17:43:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-16 17:43:13,429 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 17 states have internal predecessors, (58), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 15 states have call predecessors, (28), 12 states have call successors, (28) Word has length 185 [2023-12-16 17:43:13,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:13,436 INFO L225 Difference]: With dead ends: 646 [2023-12-16 17:43:13,436 INFO L226 Difference]: Without dead ends: 489 [2023-12-16 17:43:13,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2834 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1458, Invalid=9048, Unknown=0, NotChecked=0, Total=10506 [2023-12-16 17:43:13,443 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:13,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 261 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 17:43:13,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-16 17:43:13,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 260. [2023-12-16 17:43:13,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 152 states have (on average 1.0921052631578947) internal successors, (166), 155 states have internal predecessors, (166), 46 states have call successors, (46), 10 states have call predecessors, (46), 61 states have return successors, (557), 94 states have call predecessors, (557), 46 states have call successors, (557) [2023-12-16 17:43:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 769 transitions. [2023-12-16 17:43:13,482 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 769 transitions. Word has length 185 [2023-12-16 17:43:13,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:13,482 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 769 transitions. [2023-12-16 17:43:13,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 17 states have internal predecessors, (58), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 15 states have call predecessors, (28), 12 states have call successors, (28) [2023-12-16 17:43:13,482 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 769 transitions. [2023-12-16 17:43:13,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 17:43:13,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:13,484 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 12, 8, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:13,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:13,688 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 17:43:13,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:13,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:13,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1249943408, now seen corresponding path program 5 times [2023-12-16 17:43:13,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:13,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292999160] [2023-12-16 17:43:13,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:43:13,689 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 17:43:13,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:13,700 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 17:43:13,708 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 17:43:13,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-12-16 17:43:13,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:13,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-16 17:43:13,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 236 proven. 192 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-12-16 17:43:14,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 248 proven. 202 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-12-16 17:43:15,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:15,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292999160] [2023-12-16 17:43:15,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292999160] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:15,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:15,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24] total 38 [2023-12-16 17:43:15,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061352863] [2023-12-16 17:43:15,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:15,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-16 17:43:15,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:15,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-16 17:43:15,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 17:43:15,135 INFO L87 Difference]: Start difference. First operand 260 states and 769 transitions. Second operand has 38 states, 30 states have (on average 1.8) internal successors, (54), 22 states have internal predecessors, (54), 10 states have call successors, (13), 1 states have call predecessors, (13), 16 states have return successors, (25), 19 states have call predecessors, (25), 10 states have call successors, (25) [2023-12-16 17:43:22,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:22,556 INFO L93 Difference]: Finished difference Result 2938 states and 15977 transitions. [2023-12-16 17:43:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2023-12-16 17:43:22,557 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 30 states have (on average 1.8) internal successors, (54), 22 states have internal predecessors, (54), 10 states have call successors, (13), 1 states have call predecessors, (13), 16 states have return successors, (25), 19 states have call predecessors, (25), 10 states have call successors, (25) Word has length 130 [2023-12-16 17:43:22,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:22,714 INFO L225 Difference]: With dead ends: 2938 [2023-12-16 17:43:22,714 INFO L226 Difference]: Without dead ends: 2682 [2023-12-16 17:43:22,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21457 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8127, Invalid=54623, Unknown=0, NotChecked=0, Total=62750 [2023-12-16 17:43:22,770 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 44 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 3684 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 3787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:22,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 342 Invalid, 3787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3684 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 17:43:22,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2023-12-16 17:43:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 627. [2023-12-16 17:43:23,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 370 states have (on average 1.037837837837838) internal successors, (384), 373 states have internal predecessors, (384), 86 states have call successors, (86), 10 states have call predecessors, (86), 170 states have return successors, (3747), 243 states have call predecessors, (3747), 86 states have call successors, (3747) [2023-12-16 17:43:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 4217 transitions. [2023-12-16 17:43:23,195 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 4217 transitions. Word has length 130 [2023-12-16 17:43:23,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:23,197 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 4217 transitions. [2023-12-16 17:43:23,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 30 states have (on average 1.8) internal successors, (54), 22 states have internal predecessors, (54), 10 states have call successors, (13), 1 states have call predecessors, (13), 16 states have return successors, (25), 19 states have call predecessors, (25), 10 states have call successors, (25) [2023-12-16 17:43:23,197 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 4217 transitions. [2023-12-16 17:43:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-16 17:43:23,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:23,202 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 14, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:23,207 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 17:43:23,405 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 17:43:23,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:23,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1271139088, now seen corresponding path program 6 times [2023-12-16 17:43:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:23,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71879621] [2023-12-16 17:43:23,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:43:23,407 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 17:43:23,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:23,408 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 17:43:23,436 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 17:43:23,504 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-16 17:43:23,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:23,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:43:23,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 534 proven. 26 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2023-12-16 17:43:23,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 454 proven. 52 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2023-12-16 17:43:24,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:24,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71879621] [2023-12-16 17:43:24,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71879621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:24,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:24,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2023-12-16 17:43:24,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004676723] [2023-12-16 17:43:24,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:24,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 17:43:24,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 17:43:24,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:43:24,092 INFO L87 Difference]: Start difference. First operand 627 states and 4217 transitions. Second operand has 12 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 8 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2023-12-16 17:43:24,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:24,521 INFO L93 Difference]: Finished difference Result 1629 states and 26276 transitions. [2023-12-16 17:43:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:43:24,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 8 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) Word has length 154 [2023-12-16 17:43:24,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:24,646 INFO L225 Difference]: With dead ends: 1629 [2023-12-16 17:43:24,646 INFO L226 Difference]: Without dead ends: 1006 [2023-12-16 17:43:24,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-12-16 17:43:24,731 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 42 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:24,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 106 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:43:24,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-12-16 17:43:25,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 946. [2023-12-16 17:43:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 565 states have (on average 1.0300884955752212) internal successors, (582), 568 states have internal predecessors, (582), 118 states have call successors, (118), 14 states have call predecessors, (118), 262 states have return successors, (8648), 363 states have call predecessors, (8648), 118 states have call successors, (8648) [2023-12-16 17:43:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 9348 transitions. [2023-12-16 17:43:25,233 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 9348 transitions. Word has length 154 [2023-12-16 17:43:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:25,233 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 9348 transitions. [2023-12-16 17:43:25,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 8 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2023-12-16 17:43:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 9348 transitions. [2023-12-16 17:43:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-16 17:43:25,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:25,236 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:25,256 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 17:43:25,456 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 17:43:25,457 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:25,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:25,458 INFO L85 PathProgramCache]: Analyzing trace with hash -66567065, now seen corresponding path program 7 times [2023-12-16 17:43:25,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:25,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104495966] [2023-12-16 17:43:25,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:43:25,458 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 17:43:25,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:25,472 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 17:43:25,533 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 17:43:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:43:25,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-16 17:43:25,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 372 proven. 300 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2023-12-16 17:43:25,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 394 proven. 324 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2023-12-16 17:43:27,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:27,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104495966] [2023-12-16 17:43:27,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104495966] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:27,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:27,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27] total 41 [2023-12-16 17:43:27,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718765058] [2023-12-16 17:43:27,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:27,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-16 17:43:27,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:27,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-16 17:43:27,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1484, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 17:43:27,144 INFO L87 Difference]: Start difference. First operand 946 states and 9348 transitions. Second operand has 41 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 25 states have internal predecessors, (67), 17 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (34), 22 states have call predecessors, (34), 17 states have call successors, (34) [2023-12-16 17:43:48,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:43:48,604 INFO L93 Difference]: Finished difference Result 7302 states and 91197 transitions. [2023-12-16 17:43:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 635 states. [2023-12-16 17:43:48,605 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 25 states have internal predecessors, (67), 17 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (34), 22 states have call predecessors, (34), 17 states have call successors, (34) Word has length 147 [2023-12-16 17:43:48,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:43:49,341 INFO L225 Difference]: With dead ends: 7302 [2023-12-16 17:43:49,341 INFO L226 Difference]: Without dead ends: 5979 [2023-12-16 17:43:49,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 667 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200534 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=32822, Invalid=414070, Unknown=0, NotChecked=0, Total=446892 [2023-12-16 17:43:49,600 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 48 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 5633 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 6008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 5633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:43:49,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 511 Invalid, 6008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 5633 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 17:43:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5979 states. [2023-12-16 17:43:50,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5979 to 1569. [2023-12-16 17:43:50,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 884 states have (on average 1.0339366515837105) internal successors, (914), 886 states have internal predecessors, (914), 284 states have call successors, (284), 30 states have call predecessors, (284), 400 states have return successors, (22928), 652 states have call predecessors, (22928), 284 states have call successors, (22928) [2023-12-16 17:43:50,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 24126 transitions. [2023-12-16 17:43:50,959 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 24126 transitions. Word has length 147 [2023-12-16 17:43:50,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:43:50,959 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 24126 transitions. [2023-12-16 17:43:50,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 25 states have internal predecessors, (67), 17 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (34), 22 states have call predecessors, (34), 17 states have call successors, (34) [2023-12-16 17:43:50,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 24126 transitions. [2023-12-16 17:43:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-16 17:43:50,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:43:50,966 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:43:50,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 17:43:51,170 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 17:43:51,170 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:43:51,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:43:51,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1879943827, now seen corresponding path program 8 times [2023-12-16 17:43:51,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:43:51,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379702] [2023-12-16 17:43:51,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:43:51,174 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 17:43:51,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:43:51,181 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 17:43:51,184 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 17:43:51,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:43:51,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:43:51,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-16 17:43:51,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:43:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1438 backedges. 426 proven. 379 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2023-12-16 17:43:51,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:43:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1438 backedges. 451 proven. 415 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2023-12-16 17:43:53,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:43:53,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379702] [2023-12-16 17:43:53,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379702] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:43:53,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:43:53,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 29] total 43 [2023-12-16 17:43:53,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064279362] [2023-12-16 17:43:53,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:43:53,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-16 17:43:53,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:43:53,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-16 17:43:53,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1645, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 17:43:53,247 INFO L87 Difference]: Start difference. First operand 1569 states and 24126 transitions. Second operand has 43 states, 35 states have (on average 2.057142857142857) internal successors, (72), 27 states have internal predecessors, (72), 19 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (37), 23 states have call predecessors, (37), 19 states have call successors, (37) Received shutdown request... [2023-12-16 17:44:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 552 states. [2023-12-16 17:44:10,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 585 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149541 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=22662, Invalid=321320, Unknown=0, NotChecked=0, Total=343982 [2023-12-16 17:44:10,533 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 114 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 9035 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 9656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 9035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:44:10,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 727 Invalid, 9656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 9035 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-16 17:44:10,534 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:44:10,536 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 (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:44:10,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-16 17:44:10,545 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 17:44:10,738 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 17:44:10,739 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1569states) and FLOYD_HOARE automaton (currently 552 states, 43 states before enhancement),while ReachableStatesComputation was computing reachable states (6025 states constructed, input type IntersectNwa). [2023-12-16 17:44:10,742 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2023-12-16 17:44:10,744 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:44:10,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:44:10 BoogieIcfgContainer [2023-12-16 17:44:10,762 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:44:10,762 INFO L158 Benchmark]: Toolchain (without parser) took 68766.84ms. Allocated memory was 286.3MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 245.6MB in the beginning and 775.7MB in the end (delta: -530.2MB). Peak memory consumption was 553.0MB. Max. memory is 8.0GB. [2023-12-16 17:44:10,763 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory was 130.0MB in the beginning and 129.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:44:10,763 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.63ms. Allocated memory is still 286.3MB. Free memory was 245.1MB in the beginning and 234.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 17:44:10,763 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.54ms. Allocated memory is still 286.3MB. Free memory was 234.0MB in the beginning and 233.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:44:10,763 INFO L158 Benchmark]: Boogie Preprocessor took 44.14ms. Allocated memory is still 286.3MB. Free memory was 233.0MB in the beginning and 230.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:44:10,763 INFO L158 Benchmark]: RCFGBuilder took 278.25ms. Allocated memory is still 286.3MB. Free memory was 230.9MB in the beginning and 219.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:44:10,764 INFO L158 Benchmark]: TraceAbstraction took 68227.51ms. Allocated memory was 286.3MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 218.3MB in the beginning and 775.7MB in the end (delta: -557.4MB). Peak memory consumption was 525.8MB. Max. memory is 8.0GB. [2023-12-16 17:44:10,765 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory was 130.0MB in the beginning and 129.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 186.63ms. Allocated memory is still 286.3MB. Free memory was 245.1MB in the beginning and 234.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.54ms. Allocated memory is still 286.3MB. Free memory was 234.0MB in the beginning and 233.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.14ms. Allocated memory is still 286.3MB. Free memory was 233.0MB in the beginning and 230.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 278.25ms. Allocated memory is still 286.3MB. Free memory was 230.9MB in the beginning and 219.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 68227.51ms. Allocated memory was 286.3MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 218.3MB in the beginning and 775.7MB in the end (delta: -557.4MB). Peak memory consumption was 525.8MB. 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: 45]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 45). Cancelled while NwaCegarLoop was constructing difference of abstraction (1569states) and FLOYD_HOARE automaton (currently 552 states, 43 states before enhancement),while ReachableStatesComputation was computing reachable states (6025 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.2s, OverallIterations: 10, TraceHistogramMax: 29, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 53.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 552 SdHoareTripleChecker+Valid, 11.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 438 mSDsluCounter, 2573 SdHoareTripleChecker+Invalid, 9.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2264 mSDsCounter, 1563 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21683 IncrementalHoareTripleChecker+Invalid, 23246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1563 mSolverCounterUnsat, 309 mSDtfsCounter, 21683 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3743 GetRequests, 1942 SyntacticMatches, 0 SemanticMatches, 1801 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377619 ImplicationChecksByTransitivity, 39.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1569occurred in iteration=9, InterpolantAutomatonStates: 1089, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 7056 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 1089 NumberOfCodeBlocks, 928 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 2148 ConstructedInterpolants, 0 QuantifiedInterpolants, 4281 SizeOfPredicates, 57 NumberOfNonLiveVariables, 1690 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 14530/17474 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