/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-64bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 21:53:03,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 21:53:03,793 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-16 21:53:03,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 21:53:03,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 21:53:03,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 21:53:03,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 21:53:03,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 21:53:03,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 21:53:03,811 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 21:53:03,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 21:53:03,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 21:53:03,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 21:53:03,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 21:53:03,812 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 21:53:03,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 21:53:03,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 21:53:03,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 21:53:03,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 21:53:03,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 21:53:03,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 21:53:03,814 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 21:53:03,814 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 21:53:03,814 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 21:53:03,814 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 21:53:03,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 21:53:03,814 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 21:53:03,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 21:53:03,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 21:53:03,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 21:53:03,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 21:53:03,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 21:53:03,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 21:53:03,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 21:53:03,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 21:53:03,816 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 21:53:03,816 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 21:53:03,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 21:53:03,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 21:53:03,817 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 21:53:03,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 21:53:03,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 21:53:03,817 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 21:53:03,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 21:53:03,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 21:53:03,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 21:53:03,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 21:53:03,967 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 21:53:03,967 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 21:53:03,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c [2023-12-16 21:53:05,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 21:53:05,288 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 21:53:05,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c [2023-12-16 21:53:05,302 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d144dae42/2c6260b6b72c410d8beb48c01aefb080/FLAG5a9e1ad69 [2023-12-16 21:53:05,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d144dae42/2c6260b6b72c410d8beb48c01aefb080 [2023-12-16 21:53:05,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 21:53:05,317 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 21:53:05,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 21:53:05,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 21:53:05,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 21:53:05,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:53:05" (1/1) ... [2023-12-16 21:53:05,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7977575b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:05, skipping insertion in model container [2023-12-16 21:53:05,322 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:53:05" (1/1) ... [2023-12-16 21:53:05,391 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 21:53:05,538 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c[1247,1260] [2023-12-16 21:53:05,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 21:53:05,847 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 21:53:05,855 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Vsa16.c[1247,1260] [2023-12-16 21:53:05,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 21:53:06,006 INFO L206 MainTranslator]: Completed translation [2023-12-16 21:53:06,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06 WrapperNode [2023-12-16 21:53:06,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 21:53:06,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 21:53:06,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 21:53:06,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 21:53:06,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,191 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2539 [2023-12-16 21:53:06,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 21:53:06,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 21:53:06,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 21:53:06,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 21:53:06,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,263 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 21:53:06,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 21:53:06,359 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 21:53:06,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 21:53:06,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 21:53:06,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (1/1) ... [2023-12-16 21:53:06,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 21:53:06,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 21:53:06,409 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 21:53:06,437 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 21:53:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 21:53:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 21:53:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 21:53:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 21:53:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 21:53:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 21:53:06,754 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 21:53:06,755 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 21:53:09,115 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 21:53:09,176 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 21:53:09,176 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 21:53:09,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:53:09 BoogieIcfgContainer [2023-12-16 21:53:09,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 21:53:09,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 21:53:09,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 21:53:09,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 21:53:09,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:53:05" (1/3) ... [2023-12-16 21:53:09,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12061f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:53:09, skipping insertion in model container [2023-12-16 21:53:09,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:53:06" (2/3) ... [2023-12-16 21:53:09,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12061f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:53:09, skipping insertion in model container [2023-12-16 21:53:09,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:53:09" (3/3) ... [2023-12-16 21:53:09,182 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vsa16.c [2023-12-16 21:53:09,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 21:53:09,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 21:53:09,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 21:53:09,227 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;@43418e2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 21:53:09,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 21:53:09,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 21:53:09,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 21:53:09,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:53:09,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 21:53:09,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:53:09,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:53:09,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2051499341, now seen corresponding path program 1 times [2023-12-16 21:53:09,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:53:09,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767951725] [2023-12-16 21:53:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:53:09,251 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 21:53:09,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:53:09,253 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 21:53:09,270 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 21:53:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:53:09,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-16 21:53:09,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:53:09,802 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 21:53:09,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 21:53:09,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:53:09,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767951725] [2023-12-16 21:53:09,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767951725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 21:53:09,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 21:53:09,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 21:53:09,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723457804] [2023-12-16 21:53:09,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 21:53:09,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 21:53:09,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:53:09,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 21:53:09,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 21:53:09,826 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 21:53:10,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:53:10,183 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2023-12-16 21:53:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 21:53:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-16 21:53:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:53:10,190 INFO L225 Difference]: With dead ends: 47 [2023-12-16 21:53:10,190 INFO L226 Difference]: Without dead ends: 30 [2023-12-16 21:53:10,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 21:53:10,195 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 21:53:10,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 55 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 21:53:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-16 21:53:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2023-12-16 21:53:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 21:53:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-12-16 21:53:10,220 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2023-12-16 21:53:10,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:53:10,220 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-12-16 21:53:10,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 21:53:10,220 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-12-16 21:53:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-16 21:53:10,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:53:10,221 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 21:53:10,241 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 21:53:10,424 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 21:53:10,424 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:53:10,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:53:10,425 INFO L85 PathProgramCache]: Analyzing trace with hash 730219341, now seen corresponding path program 1 times [2023-12-16 21:53:10,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:53:10,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762764271] [2023-12-16 21:53:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:53:10,426 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 21:53:10,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:53:10,430 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 21:53:10,432 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 21:53:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:53:10,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-16 21:53:10,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:53:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 21:53:10,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 21:53:10,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:53:10,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762764271] [2023-12-16 21:53:10,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762764271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 21:53:10,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 21:53:10,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 21:53:10,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016783708] [2023-12-16 21:53:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 21:53:10,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 21:53:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:53:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 21:53:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 21:53:10,927 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 21:53:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:53:11,322 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2023-12-16 21:53:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 21:53:11,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-16 21:53:11,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:53:11,326 INFO L225 Difference]: With dead ends: 38 [2023-12-16 21:53:11,326 INFO L226 Difference]: Without dead ends: 36 [2023-12-16 21:53:11,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 21:53:11,327 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 21:53:11,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 73 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 21:53:11,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-16 21:53:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2023-12-16 21:53:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 21:53:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-12-16 21:53:11,334 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12 [2023-12-16 21:53:11,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:53:11,335 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-12-16 21:53:11,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 21:53:11,335 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-12-16 21:53:11,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 21:53:11,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:53:11,336 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 21:53:11,352 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 21:53:11,539 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 21:53:11,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:53:11,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:53:11,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1887197541, now seen corresponding path program 1 times [2023-12-16 21:53:11,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:53:11,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970312458] [2023-12-16 21:53:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:53:11,542 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 21:53:11,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:53:11,543 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 21:53:11,544 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 21:53:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:53:11,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 21:53:11,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:53:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 21:53:12,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 21:53:12,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:53:12,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970312458] [2023-12-16 21:53:12,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970312458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 21:53:12,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 21:53:12,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 21:53:12,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602827037] [2023-12-16 21:53:12,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 21:53:12,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 21:53:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:53:12,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 21:53:12,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 21:53:12,019 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 21:53:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:53:12,454 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2023-12-16 21:53:12,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 21:53:12,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-16 21:53:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:53:12,456 INFO L225 Difference]: With dead ends: 44 [2023-12-16 21:53:12,456 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 21:53:12,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 21:53:12,457 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 21:53:12,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 82 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 21:53:12,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 21:53:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2023-12-16 21:53:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 21:53:12,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2023-12-16 21:53:12,463 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 18 [2023-12-16 21:53:12,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:53:12,464 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2023-12-16 21:53:12,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 21:53:12,464 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2023-12-16 21:53:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 21:53:12,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:53:12,464 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 21:53:12,487 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 21:53:12,668 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 21:53:12,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:53:12,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:53:12,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1730561659, now seen corresponding path program 1 times [2023-12-16 21:53:12,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:53:12,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915463781] [2023-12-16 21:53:12,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:53:12,669 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 21:53:12,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:53:12,670 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 21:53:12,672 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 (5)] Waiting until timeout for monitored process [2023-12-16 21:53:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:53:13,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-16 21:53:13,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:53:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 21:53:13,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 21:53:13,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:53:13,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915463781] [2023-12-16 21:53:13,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915463781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 21:53:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 21:53:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 21:53:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086275345] [2023-12-16 21:53:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 21:53:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 21:53:13,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:53:13,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 21:53:13,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 21:53:13,431 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 21:53:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:53:13,961 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2023-12-16 21:53:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 21:53:13,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-12-16 21:53:13,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:53:13,962 INFO L225 Difference]: With dead ends: 50 [2023-12-16 21:53:13,962 INFO L226 Difference]: Without dead ends: 48 [2023-12-16 21:53:13,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-16 21:53:13,963 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 16 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 21:53:13,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 125 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 21:53:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-16 21:53:13,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2023-12-16 21:53:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 21:53:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-12-16 21:53:13,969 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 24 [2023-12-16 21:53:13,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:53:13,969 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-12-16 21:53:13,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 21:53:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-12-16 21:53:13,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 21:53:13,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:53:13,970 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 21:53:13,975 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 21:53:14,175 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 21:53:14,175 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:53:14,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:53:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash 907662433, now seen corresponding path program 1 times [2023-12-16 21:53:14,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:53:14,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377500223] [2023-12-16 21:53:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:53:14,178 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 21:53:14,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:53:14,193 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 21:53:14,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 21:53:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:53:18,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 2031 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-16 21:53:18,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:53:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 21:53:18,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:53:19,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:53:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377500223] [2023-12-16 21:53:19,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377500223] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:53:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1450430782] [2023-12-16 21:53:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:53:19,751 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 21:53:19,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 21:53:19,797 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 21:53:19,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-16 21:53:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:53:21,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 2031 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-16 21:53:21,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:53:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 21:53:22,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:53:22,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1450430782] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:53:22,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 21:53:22,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-16 21:53:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987408252] [2023-12-16 21:53:22,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 21:53:22,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 21:53:22,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:53:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 21:53:22,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-16 21:53:22,898 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 21:53:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:53:23,653 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2023-12-16 21:53:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 21:53:23,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 31 [2023-12-16 21:53:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:53:23,655 INFO L225 Difference]: With dead ends: 57 [2023-12-16 21:53:23,655 INFO L226 Difference]: Without dead ends: 55 [2023-12-16 21:53:23,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-12-16 21:53:23,657 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 21:53:23,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 66 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 21:53:23,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-16 21:53:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2023-12-16 21:53:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 21:53:23,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2023-12-16 21:53:23,696 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 31 [2023-12-16 21:53:23,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:53:23,697 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2023-12-16 21:53:23,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 21:53:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2023-12-16 21:53:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 21:53:23,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:53:23,698 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 21:53:23,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-16 21:53:23,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 21:53:24,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 21:53:24,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:53:24,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:53:24,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2032860549, now seen corresponding path program 2 times [2023-12-16 21:53:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:53:24,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665586419] [2023-12-16 21:53:24,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 21:53:24,112 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 21:53:24,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:53:24,113 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 21:53:24,117 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 21:53:28,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 21:53:28,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 21:53:28,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 259 conjunts are in the unsatisfiable core [2023-12-16 21:53:28,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:53:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 21:53:35,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:53:35,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:53:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665586419] [2023-12-16 21:53:35,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665586419] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:53:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1530821903] [2023-12-16 21:53:35,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 21:53:35,993 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 21:53:35,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 21:53:35,996 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 21:53:36,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-16 21:53:37,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 21:53:37,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 21:53:37,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 262 conjunts are in the unsatisfiable core [2023-12-16 21:53:37,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:53:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 21:53:44,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:53:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1530821903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:53:44,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 21:53:44,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2023-12-16 21:53:44,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604087981] [2023-12-16 21:53:44,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 21:53:44,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 21:53:44,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:53:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 21:53:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 21:53:44,332 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 21:53:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:53:44,908 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2023-12-16 21:53:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 21:53:44,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-12-16 21:53:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:53:44,910 INFO L225 Difference]: With dead ends: 63 [2023-12-16 21:53:44,910 INFO L226 Difference]: Without dead ends: 61 [2023-12-16 21:53:44,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-16 21:53:44,910 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 21:53:44,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 67 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 21:53:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-16 21:53:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2023-12-16 21:53:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 21:53:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2023-12-16 21:53:44,918 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 37 [2023-12-16 21:53:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:53:44,918 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2023-12-16 21:53:44,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 21:53:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2023-12-16 21:53:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 21:53:44,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:53:44,920 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 21:53:44,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-16 21:53:45,145 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 21:53:45,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 21:53:45,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:53:45,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:53:45,329 INFO L85 PathProgramCache]: Analyzing trace with hash -522289645, now seen corresponding path program 3 times [2023-12-16 21:53:45,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:53:45,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315702211] [2023-12-16 21:53:45,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 21:53:45,331 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 21:53:45,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:53:45,337 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 21:53:45,339 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 21:53:48,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 21:53:48,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 21:53:48,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 1939 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-16 21:53:48,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:53:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 21:53:48,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:53:48,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:53:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315702211] [2023-12-16 21:53:48,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315702211] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:53:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1189441709] [2023-12-16 21:53:48,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 21:53:48,344 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 21:53:48,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 21:53:48,346 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 21:53:48,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-16 21:53:49,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 21:53:49,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 21:53:49,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 1939 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-16 21:53:49,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:53:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 21:53:49,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:53:50,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1189441709] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:53:50,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 21:53:50,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2023-12-16 21:53:50,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035300728] [2023-12-16 21:53:50,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 21:53:50,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 21:53:50,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:53:50,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 21:53:50,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 21:53:50,035 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 21:53:50,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:53:50,659 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2023-12-16 21:53:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 21:53:50,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2023-12-16 21:53:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:53:50,664 INFO L225 Difference]: With dead ends: 69 [2023-12-16 21:53:50,669 INFO L226 Difference]: Without dead ends: 67 [2023-12-16 21:53:50,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-16 21:53:50,671 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 21:53:50,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 85 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 21:53:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-16 21:53:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2023-12-16 21:53:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 40 states have internal predecessors, (40), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 21:53:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2023-12-16 21:53:50,683 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 43 [2023-12-16 21:53:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:53:50,683 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2023-12-16 21:53:50,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 21:53:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2023-12-16 21:53:50,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 21:53:50,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:53:50,684 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-16 21:53:50,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-16 21:53:50,903 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 21:53:51,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 21:53:51,090 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:53:51,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:53:51,090 INFO L85 PathProgramCache]: Analyzing trace with hash -623267671, now seen corresponding path program 4 times [2023-12-16 21:53:51,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:53:51,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932909319] [2023-12-16 21:53:51,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 21:53:51,092 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 21:53:51,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:53:51,093 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 21:53:51,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 21:53:55,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 21:53:55,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 21:53:55,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 327 conjunts are in the unsatisfiable core [2023-12-16 21:53:55,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:54:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 21:54:04,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:54:05,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:54:05,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932909319] [2023-12-16 21:54:05,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932909319] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:54:05,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1603763182] [2023-12-16 21:54:05,852 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 21:54:05,852 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 21:54:05,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 21:54:05,853 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 21:54:05,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-16 21:54:07,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 21:54:07,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 21:54:07,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 333 conjunts are in the unsatisfiable core [2023-12-16 21:54:07,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:54:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 21:54:16,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:54:17,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1603763182] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:54:17,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 21:54:17,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2023-12-16 21:54:17,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469218861] [2023-12-16 21:54:17,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 21:54:17,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 21:54:17,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:54:17,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 21:54:17,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-16 21:54:17,730 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 10 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Received shutdown request... [2023-12-16 21:54:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 21:54:18,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-16 21:54:18,100 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 21:54:18,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 76 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 21:54:18,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 21:54:18,107 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 21:54:18,107 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 21:54:18,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-16 21:54:18,132 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 (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 21:54:18,334 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 (12)] Ended with exit code 0 [2023-12-16 21:54:18,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:54:18,535 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (59states) and FLOYD_HOARE automaton (currently 5 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (32 states constructed, input type IntersectNwa). [2023-12-16 21:54:18,538 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2023-12-16 21:54:18,540 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 21:54:18,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 09:54:18 BoogieIcfgContainer [2023-12-16 21:54:18,541 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 21:54:18,541 INFO L158 Benchmark]: Toolchain (without parser) took 73224.42ms. Allocated memory was 286.3MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 230.5MB in the beginning and 763.0MB in the end (delta: -532.5MB). Peak memory consumption was 896.5MB. Max. memory is 8.0GB. [2023-12-16 21:54:18,541 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 203.4MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 21:54:18,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 690.38ms. Allocated memory is still 286.3MB. Free memory was 230.5MB in the beginning and 228.6MB in the end (delta: 1.9MB). Peak memory consumption was 74.5MB. Max. memory is 8.0GB. [2023-12-16 21:54:18,542 INFO L158 Benchmark]: Boogie Procedure Inliner took 182.49ms. Allocated memory is still 286.3MB. Free memory was 228.6MB in the beginning and 222.1MB in the end (delta: 6.5MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. [2023-12-16 21:54:18,542 INFO L158 Benchmark]: Boogie Preprocessor took 166.53ms. Allocated memory is still 286.3MB. Free memory was 222.1MB in the beginning and 200.5MB in the end (delta: 21.6MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-16 21:54:18,542 INFO L158 Benchmark]: RCFGBuilder took 2817.37ms. Allocated memory was 286.3MB in the beginning and 466.6MB in the end (delta: 180.4MB). Free memory was 200.5MB in the beginning and 339.9MB in the end (delta: -139.4MB). Peak memory consumption was 240.1MB. Max. memory is 8.0GB. [2023-12-16 21:54:18,542 INFO L158 Benchmark]: TraceAbstraction took 69363.10ms. Allocated memory was 466.6MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 338.8MB in the beginning and 763.0MB in the end (delta: -424.2MB). Peak memory consumption was 825.7MB. Max. memory is 8.0GB. [2023-12-16 21:54:18,543 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 203.4MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 690.38ms. Allocated memory is still 286.3MB. Free memory was 230.5MB in the beginning and 228.6MB in the end (delta: 1.9MB). Peak memory consumption was 74.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 182.49ms. Allocated memory is still 286.3MB. Free memory was 228.6MB in the beginning and 222.1MB in the end (delta: 6.5MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 166.53ms. Allocated memory is still 286.3MB. Free memory was 222.1MB in the beginning and 200.5MB in the end (delta: 21.6MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * RCFGBuilder took 2817.37ms. Allocated memory was 286.3MB in the beginning and 466.6MB in the end (delta: 180.4MB). Free memory was 200.5MB in the beginning and 339.9MB in the end (delta: -139.4MB). Peak memory consumption was 240.1MB. Max. memory is 8.0GB. * TraceAbstraction took 69363.10ms. Allocated memory was 466.6MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 338.8MB in the beginning and 763.0MB in the end (delta: -424.2MB). Peak memory consumption was 825.7MB. 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: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (59states) and FLOYD_HOARE automaton (currently 5 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (32 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.3s, OverallIterations: 8, TraceHistogramMax: 8, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 629 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 503 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 462 IncrementalHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 126 mSDtfsCounter, 462 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 442 GetRequests, 355 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=7, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.7s SsaConstructionTime, 17.9s SatisfiabilityAnalysisTime, 38.7s InterpolantComputationTime, 380 NumberOfCodeBlocks, 332 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 368 ConstructedInterpolants, 20 QuantifiedInterpolants, 4479 SizeOfPredicates, 1491 NumberOfNonLiveVariables, 17076 ConjunctsInSsa, 1521 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 532/572 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