/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 21:30:46,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 21:30:46,598 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 21:30:46,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 21:30:46,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 21:30:46,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 21:30:46,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 21:30:46,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 21:30:46,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 21:30:46,615 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 21:30:46,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 21:30:46,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 21:30:46,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 21:30:46,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 21:30:46,617 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 21:30:46,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 21:30:46,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 21:30:46,617 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 21:30:46,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 21:30:46,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 21:30:46,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 21:30:46,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 21:30:46,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 21:30:46,619 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 21:30:46,619 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 21:30:46,619 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 21:30:46,619 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 21:30:46,619 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 21:30:46,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 21:30:46,620 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 21:30:46,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 21:30:46,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 21:30:46,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 21:30:46,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 21:30:46,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:30:46,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 21:30:46,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 21:30:46,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 21:30:46,621 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 21:30:46,621 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 21:30:46,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 21:30:46,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 21:30:46,622 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 21:30:46,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 21:30:46,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 21:30:46,622 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 21:30:46,622 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 21:30:46,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 21:30:46,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 21:30:46,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 21:30:46,768 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 21:30:46,768 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 21:30:46,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2023-12-21 21:30:47,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 21:30:47,930 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 21:30:47,930 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2023-12-21 21:30:47,936 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0edc750f6/6a52647bdb26455fad0dd2f3c340bc1b/FLAG3b1648c67 [2023-12-21 21:30:47,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0edc750f6/6a52647bdb26455fad0dd2f3c340bc1b [2023-12-21 21:30:47,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 21:30:47,950 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 21:30:47,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 21:30:47,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 21:30:47,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 21:30:47,954 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:30:47" (1/1) ... [2023-12-21 21:30:47,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18916ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:47, skipping insertion in model container [2023-12-21 21:30:47,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:30:47" (1/1) ... [2023-12-21 21:30:47,972 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 21:30:48,071 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c[728,741] [2023-12-21 21:30:48,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:30:48,121 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 21:30:48,138 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c[728,741] [2023-12-21 21:30:48,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:30:48,165 INFO L206 MainTranslator]: Completed translation [2023-12-21 21:30:48,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48 WrapperNode [2023-12-21 21:30:48,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 21:30:48,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 21:30:48,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 21:30:48,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 21:30:48,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,194 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 113 [2023-12-21 21:30:48,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 21:30:48,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 21:30:48,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 21:30:48,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 21:30:48,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,231 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]. [2023-12-21 21:30:48,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,236 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 21:30:48,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 21:30:48,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 21:30:48,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 21:30:48,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (1/1) ... [2023-12-21 21:30:48,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:30:48,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 21:30:48,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 21:30:48,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 21:30:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 21:30:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 21:30:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-12-21 21:30:48,302 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-12-21 21:30:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 21:30:48,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 21:30:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 21:30:48,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 21:30:48,350 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 21:30:48,352 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 21:30:48,609 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 21:30:48,628 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 21:30:48,628 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 21:30:48,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:30:48 BoogieIcfgContainer [2023-12-21 21:30:48,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 21:30:48,630 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 21:30:48,630 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 21:30:48,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 21:30:48,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:30:47" (1/3) ... [2023-12-21 21:30:48,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25916b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:30:48, skipping insertion in model container [2023-12-21 21:30:48,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:48" (2/3) ... [2023-12-21 21:30:48,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25916b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:30:48, skipping insertion in model container [2023-12-21 21:30:48,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:30:48" (3/3) ... [2023-12-21 21:30:48,634 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2023-12-21 21:30:48,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 21:30:48,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 21:30:48,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 21:30:48,679 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;@36239c6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 21:30:48,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 21:30:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 39 states have internal predecessors, (61), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 21:30:48,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 21:30:48,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:48,689 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:48,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:48,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:48,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1674753075, now seen corresponding path program 1 times [2023-12-21 21:30:48,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:48,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630126220] [2023-12-21 21:30:48,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:48,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:48,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:48,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:30:48,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 21:30:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:48,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 21:30:48,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 21:30:48,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:30:48,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:48,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630126220] [2023-12-21 21:30:48,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630126220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:30:48,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:30:48,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:30:48,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693279616] [2023-12-21 21:30:48,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:30:48,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:30:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:48,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:30:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:30:48,898 INFO L87 Difference]: Start difference. First operand has 46 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 39 states have internal predecessors, (61), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:30:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:49,028 INFO L93 Difference]: Finished difference Result 102 states and 168 transitions. [2023-12-21 21:30:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:30:49,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2023-12-21 21:30:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:49,037 INFO L225 Difference]: With dead ends: 102 [2023-12-21 21:30:49,037 INFO L226 Difference]: Without dead ends: 54 [2023-12-21 21:30:49,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:30:49,046 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 14 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:49,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 134 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:30:49,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-21 21:30:49,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2023-12-21 21:30:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-21 21:30:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 66 transitions. [2023-12-21 21:30:49,073 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 66 transitions. Word has length 35 [2023-12-21 21:30:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:49,073 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 66 transitions. [2023-12-21 21:30:49,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:30:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 66 transitions. [2023-12-21 21:30:49,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 21:30:49,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:49,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:49,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 21:30:49,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:49,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:49,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:49,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2055276755, now seen corresponding path program 1 times [2023-12-21 21:30:49,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:49,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015049584] [2023-12-21 21:30:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:49,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:49,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:49,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:30:49,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 21:30:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:49,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 21:30:49,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 21:30:49,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:30:49,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:49,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015049584] [2023-12-21 21:30:49,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015049584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:30:49,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:30:49,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:30:49,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130668602] [2023-12-21 21:30:49,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:30:49,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:30:49,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:49,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:30:49,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:30:49,358 INFO L87 Difference]: Start difference. First operand 46 states and 66 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:30:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:49,437 INFO L93 Difference]: Finished difference Result 96 states and 141 transitions. [2023-12-21 21:30:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:30:49,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-12-21 21:30:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:49,439 INFO L225 Difference]: With dead ends: 96 [2023-12-21 21:30:49,439 INFO L226 Difference]: Without dead ends: 56 [2023-12-21 21:30:49,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:30:49,440 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 9 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:49,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 134 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:30:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-21 21:30:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2023-12-21 21:30:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 42 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:30:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 72 transitions. [2023-12-21 21:30:49,446 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 72 transitions. Word has length 38 [2023-12-21 21:30:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:49,447 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 72 transitions. [2023-12-21 21:30:49,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:30:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 72 transitions. [2023-12-21 21:30:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 21:30:49,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:49,448 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:49,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 21:30:49,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:49,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:49,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:49,650 INFO L85 PathProgramCache]: Analyzing trace with hash -120418018, now seen corresponding path program 1 times [2023-12-21 21:30:49,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:49,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000634215] [2023-12-21 21:30:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:49,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:49,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:49,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:30:49,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 21:30:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:49,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 21:30:49,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 21:30:49,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:30:49,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:49,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000634215] [2023-12-21 21:30:49,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000634215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:30:49,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:30:49,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:30:49,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819760671] [2023-12-21 21:30:49,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:30:49,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:30:49,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:49,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:30:49,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:30:49,729 INFO L87 Difference]: Start difference. First operand 50 states and 72 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:30:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:49,797 INFO L93 Difference]: Finished difference Result 103 states and 151 transitions. [2023-12-21 21:30:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:30:49,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2023-12-21 21:30:49,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:49,798 INFO L225 Difference]: With dead ends: 103 [2023-12-21 21:30:49,798 INFO L226 Difference]: Without dead ends: 59 [2023-12-21 21:30:49,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:30:49,799 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:49,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 125 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:30:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-21 21:30:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-12-21 21:30:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 43 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:30:49,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2023-12-21 21:30:49,806 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 39 [2023-12-21 21:30:49,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:49,806 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2023-12-21 21:30:49,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:30:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2023-12-21 21:30:49,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 21:30:49,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:49,807 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:49,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 21:30:50,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:50,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:50,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:50,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1362502126, now seen corresponding path program 1 times [2023-12-21 21:30:50,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:50,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826785794] [2023-12-21 21:30:50,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:50,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:50,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:50,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:30:50,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 21:30:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:50,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:30:50,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 21:30:50,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:30:50,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826785794] [2023-12-21 21:30:50,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826785794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:30:50,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:30:50,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 21:30:50,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777210173] [2023-12-21 21:30:50,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:30:50,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:30:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:50,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:30:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:30:50,084 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:30:50,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:50,177 INFO L93 Difference]: Finished difference Result 110 states and 161 transitions. [2023-12-21 21:30:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 21:30:50,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-12-21 21:30:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:50,178 INFO L225 Difference]: With dead ends: 110 [2023-12-21 21:30:50,178 INFO L226 Difference]: Without dead ends: 65 [2023-12-21 21:30:50,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:30:50,179 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 15 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:50,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 162 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:30:50,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-21 21:30:50,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2023-12-21 21:30:50,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.441860465116279) internal successors, (62), 44 states have internal predecessors, (62), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:30:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 75 transitions. [2023-12-21 21:30:50,194 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 75 transitions. Word has length 40 [2023-12-21 21:30:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:50,194 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 75 transitions. [2023-12-21 21:30:50,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:30:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 75 transitions. [2023-12-21 21:30:50,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 21:30:50,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:50,205 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:50,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 21:30:50,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:50,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:50,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash -767724319, now seen corresponding path program 1 times [2023-12-21 21:30:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:50,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407766224] [2023-12-21 21:30:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:50,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:50,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:50,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:30:50,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 21:30:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:50,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:30:50,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 21:30:50,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:30:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 21:30:50,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:50,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407766224] [2023-12-21 21:30:50,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407766224] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:30:50,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:30:50,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-21 21:30:50,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712270057] [2023-12-21 21:30:50,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:30:50,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 21:30:50,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:50,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 21:30:50,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 21:30:50,582 INFO L87 Difference]: Start difference. First operand 52 states and 75 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:30:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:50,754 INFO L93 Difference]: Finished difference Result 127 states and 189 transitions. [2023-12-21 21:30:50,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 21:30:50,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 41 [2023-12-21 21:30:50,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:50,755 INFO L225 Difference]: With dead ends: 127 [2023-12-21 21:30:50,756 INFO L226 Difference]: Without dead ends: 81 [2023-12-21 21:30:50,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 21:30:50,757 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 39 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:50,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 196 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:30:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-21 21:30:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 60. [2023-12-21 21:30:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 52 states have internal predecessors, (75), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:30:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 88 transitions. [2023-12-21 21:30:50,764 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 88 transitions. Word has length 41 [2023-12-21 21:30:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:50,764 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 88 transitions. [2023-12-21 21:30:50,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:30:50,764 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 88 transitions. [2023-12-21 21:30:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 21:30:50,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:50,765 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:50,770 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 [2023-12-21 21:30:50,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:50,970 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:50,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:50,971 INFO L85 PathProgramCache]: Analyzing trace with hash 152796832, now seen corresponding path program 1 times [2023-12-21 21:30:50,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:50,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235016146] [2023-12-21 21:30:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:50,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:50,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:50,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:30:50,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 21:30:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:51,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 21:30:51,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 21:30:51,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:30:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 21:30:51,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:51,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235016146] [2023-12-21 21:30:51,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235016146] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:30:51,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:30:51,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-21 21:30:51,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574704773] [2023-12-21 21:30:51,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:30:51,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 21:30:51,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:51,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 21:30:51,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-21 21:30:51,172 INFO L87 Difference]: Start difference. First operand 60 states and 88 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:30:51,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:51,364 INFO L93 Difference]: Finished difference Result 143 states and 215 transitions. [2023-12-21 21:30:51,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 21:30:51,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-12-21 21:30:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:51,365 INFO L225 Difference]: With dead ends: 143 [2023-12-21 21:30:51,365 INFO L226 Difference]: Without dead ends: 89 [2023-12-21 21:30:51,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 21:30:51,366 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 62 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:51,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 252 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:30:51,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-21 21:30:51,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 64. [2023-12-21 21:30:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.490909090909091) internal successors, (82), 56 states have internal predecessors, (82), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:30:51,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 95 transitions. [2023-12-21 21:30:51,381 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 95 transitions. Word has length 43 [2023-12-21 21:30:51,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:51,381 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 95 transitions. [2023-12-21 21:30:51,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:30:51,381 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 95 transitions. [2023-12-21 21:30:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 21:30:51,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:51,382 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:51,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 21:30:51,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:51,583 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:51,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:51,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1442042707, now seen corresponding path program 2 times [2023-12-21 21:30:51,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:51,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354649782] [2023-12-21 21:30:51,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:30:51,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:51,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:51,586 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:30:51,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 21:30:51,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 21:30:51,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:30:51,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 21:30:51,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 21:30:51,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:30:51,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:51,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354649782] [2023-12-21 21:30:51,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354649782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:30:51,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:30:51,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 21:30:51,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134215189] [2023-12-21 21:30:51,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:30:51,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 21:30:51,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:51,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 21:30:51,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:30:51,673 INFO L87 Difference]: Start difference. First operand 64 states and 95 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:30:51,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:51,730 INFO L93 Difference]: Finished difference Result 92 states and 137 transitions. [2023-12-21 21:30:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:30:51,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2023-12-21 21:30:51,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:51,731 INFO L225 Difference]: With dead ends: 92 [2023-12-21 21:30:51,731 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 21:30:51,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:30:51,732 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:51,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 268 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:30:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 21:30:51,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2023-12-21 21:30:51,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 60 states have (on average 1.45) internal successors, (87), 62 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 21:30:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2023-12-21 21:30:51,738 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 50 [2023-12-21 21:30:51,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:51,738 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2023-12-21 21:30:51,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:30:51,738 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2023-12-21 21:30:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 21:30:51,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:51,739 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:51,741 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 (8)] Ended with exit code 0 [2023-12-21 21:30:51,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:51,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:51,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:51,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1049015697, now seen corresponding path program 1 times [2023-12-21 21:30:51,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:51,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292088659] [2023-12-21 21:30:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:51,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:51,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:51,945 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:30:51,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 21:30:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:51,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 21:30:51,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 21:30:52,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:30:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 21:30:52,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:52,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292088659] [2023-12-21 21:30:52,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292088659] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:30:52,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:30:52,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-21 21:30:52,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664056017] [2023-12-21 21:30:52,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:30:52,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 21:30:52,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 21:30:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-12-21 21:30:52,305 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:30:52,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:52,869 INFO L93 Difference]: Finished difference Result 192 states and 289 transitions. [2023-12-21 21:30:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 21:30:52,870 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2023-12-21 21:30:52,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:52,871 INFO L225 Difference]: With dead ends: 192 [2023-12-21 21:30:52,871 INFO L226 Difference]: Without dead ends: 127 [2023-12-21 21:30:52,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2023-12-21 21:30:52,872 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 134 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:52,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 347 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:30:52,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-21 21:30:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 85. [2023-12-21 21:30:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 76 states have internal predecessors, (110), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 21:30:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 128 transitions. [2023-12-21 21:30:52,884 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 128 transitions. Word has length 50 [2023-12-21 21:30:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:52,885 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 128 transitions. [2023-12-21 21:30:52,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:30:52,885 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 128 transitions. [2023-12-21 21:30:52,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 21:30:52,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:52,886 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:52,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 21:30:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:53,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:53,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash -86628770, now seen corresponding path program 1 times [2023-12-21 21:30:53,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:53,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825742892] [2023-12-21 21:30:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:53,092 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 [2023-12-21 21:30:53,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:53,095 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) [2023-12-21 21:30:53,101 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 [2023-12-21 21:30:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:53,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 21:30:53,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 21:30:53,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:30:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 21:30:53,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825742892] [2023-12-21 21:30:53,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825742892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:30:53,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:30:53,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-21 21:30:53,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563021670] [2023-12-21 21:30:53,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:30:53,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 21:30:53,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:53,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 21:30:53,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-21 21:30:53,463 INFO L87 Difference]: Start difference. First operand 85 states and 128 transitions. Second operand has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:30:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:54,013 INFO L93 Difference]: Finished difference Result 215 states and 327 transitions. [2023-12-21 21:30:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 21:30:54,014 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2023-12-21 21:30:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:54,015 INFO L225 Difference]: With dead ends: 215 [2023-12-21 21:30:54,015 INFO L226 Difference]: Without dead ends: 136 [2023-12-21 21:30:54,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=354, Invalid=638, Unknown=0, NotChecked=0, Total=992 [2023-12-21 21:30:54,016 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 193 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:54,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 554 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:30:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-21 21:30:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 95. [2023-12-21 21:30:54,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 84 states have (on average 1.5119047619047619) internal successors, (127), 86 states have internal predecessors, (127), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 21:30:54,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 145 transitions. [2023-12-21 21:30:54,025 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 145 transitions. Word has length 55 [2023-12-21 21:30:54,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:54,025 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 145 transitions. [2023-12-21 21:30:54,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:30:54,026 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 145 transitions. [2023-12-21 21:30:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 21:30:54,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:54,026 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:54,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-21 21:30:54,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:54,229 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:54,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:54,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1345790639, now seen corresponding path program 2 times [2023-12-21 21:30:54,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:54,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534651256] [2023-12-21 21:30:54,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:30:54,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:54,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:54,231 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:30:54,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 21:30:54,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 21:30:54,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:30:54,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:30:54,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-21 21:30:54,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:30:54,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:54,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534651256] [2023-12-21 21:30:54,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534651256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:30:54,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:30:54,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:30:54,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125462492] [2023-12-21 21:30:54,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:30:54,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:30:54,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:54,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:30:54,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:30:54,267 INFO L87 Difference]: Start difference. First operand 95 states and 145 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:30:54,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:54,278 INFO L93 Difference]: Finished difference Result 104 states and 155 transitions. [2023-12-21 21:30:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:30:54,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2023-12-21 21:30:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:54,281 INFO L225 Difference]: With dead ends: 104 [2023-12-21 21:30:54,282 INFO L226 Difference]: Without dead ends: 95 [2023-12-21 21:30:54,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:30:54,282 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:54,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:30:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-21 21:30:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-21 21:30:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 84 states have (on average 1.5) internal successors, (126), 86 states have internal predecessors, (126), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 21:30:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 144 transitions. [2023-12-21 21:30:54,303 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 144 transitions. Word has length 68 [2023-12-21 21:30:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:54,303 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 144 transitions. [2023-12-21 21:30:54,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:30:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 144 transitions. [2023-12-21 21:30:54,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 21:30:54,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:54,316 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:54,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 21:30:54,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:54,518 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:54,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:54,518 INFO L85 PathProgramCache]: Analyzing trace with hash 289373175, now seen corresponding path program 1 times [2023-12-21 21:30:54,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:54,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751432268] [2023-12-21 21:30:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:54,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:54,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:54,520 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) [2023-12-21 21:30:54,521 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 [2023-12-21 21:30:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:54,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 21:30:54,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 19 proven. 155 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 21:30:54,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:30:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 3 proven. 161 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 21:30:55,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:55,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751432268] [2023-12-21 21:30:55,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751432268] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:30:55,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:30:55,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-21 21:30:55,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736288243] [2023-12-21 21:30:55,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:30:55,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 21:30:55,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:55,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 21:30:55,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-12-21 21:30:55,596 INFO L87 Difference]: Start difference. First operand 95 states and 144 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:30:58,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:58,248 INFO L93 Difference]: Finished difference Result 300 states and 457 transitions. [2023-12-21 21:30:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 21:30:58,249 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2023-12-21 21:30:58,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:58,250 INFO L225 Difference]: With dead ends: 300 [2023-12-21 21:30:58,250 INFO L226 Difference]: Without dead ends: 211 [2023-12-21 21:30:58,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=729, Invalid=1433, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 21:30:58,251 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 352 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:58,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 997 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 21:30:58,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-21 21:30:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 121. [2023-12-21 21:30:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 110 states have (on average 1.5363636363636364) internal successors, (169), 112 states have internal predecessors, (169), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 21:30:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 187 transitions. [2023-12-21 21:30:58,262 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 187 transitions. Word has length 70 [2023-12-21 21:30:58,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:58,262 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 187 transitions. [2023-12-21 21:30:58,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:30:58,262 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 187 transitions. [2023-12-21 21:30:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:30:58,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:58,263 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:58,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 21:30:58,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:58,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:58,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1850917060, now seen corresponding path program 1 times [2023-12-21 21:30:58,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:58,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245842347] [2023-12-21 21:30:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:58,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:58,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:58,467 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:30:58,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 21:30:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:58,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 21:30:58,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 19 proven. 273 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 21:30:58,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:30:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 3 proven. 279 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 21:30:59,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:59,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245842347] [2023-12-21 21:30:59,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245842347] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:30:59,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:30:59,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2023-12-21 21:30:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421769598] [2023-12-21 21:30:59,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:30:59,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 21:30:59,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:59,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 21:30:59,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 21:30:59,510 INFO L87 Difference]: Start difference. First operand 121 states and 187 transitions. Second operand has 34 states, 34 states have (on average 3.411764705882353) internal successors, (116), 34 states have internal predecessors, (116), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:31:00,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:00,942 INFO L93 Difference]: Finished difference Result 309 states and 471 transitions. [2023-12-21 21:31:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 21:31:00,943 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.411764705882353) internal successors, (116), 34 states have internal predecessors, (116), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2023-12-21 21:31:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:00,944 INFO L225 Difference]: With dead ends: 309 [2023-12-21 21:31:00,944 INFO L226 Difference]: Without dead ends: 194 [2023-12-21 21:31:00,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=991, Invalid=2315, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 21:31:00,946 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 431 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:00,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 994 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 21:31:00,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-21 21:31:00,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 125. [2023-12-21 21:31:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 114 states have (on average 1.543859649122807) internal successors, (176), 116 states have internal predecessors, (176), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 21:31:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 194 transitions. [2023-12-21 21:31:00,957 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 194 transitions. Word has length 81 [2023-12-21 21:31:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:00,958 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 194 transitions. [2023-12-21 21:31:00,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.411764705882353) internal successors, (116), 34 states have internal predecessors, (116), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:31:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 194 transitions. [2023-12-21 21:31:00,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 21:31:00,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:00,960 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:31:00,980 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 (13)] Ended with exit code 0 [2023-12-21 21:31:01,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:01,163 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:01,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:01,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1673960311, now seen corresponding path program 2 times [2023-12-21 21:31:01,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:01,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368215557] [2023-12-21 21:31:01,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:31:01,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:01,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:01,165 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:01,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 21:31:01,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 21:31:01,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:31:01,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 21:31:01,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2023-12-21 21:31:01,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:31:01,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:01,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368215557] [2023-12-21 21:31:01,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368215557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:31:01,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:31:01,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:31:01,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974383328] [2023-12-21 21:31:01,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:31:01,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:31:01,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:01,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:31:01,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:31:01,216 INFO L87 Difference]: Start difference. First operand 125 states and 194 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:31:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:01,231 INFO L93 Difference]: Finished difference Result 135 states and 205 transitions. [2023-12-21 21:31:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:31:01,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 106 [2023-12-21 21:31:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:01,233 INFO L225 Difference]: With dead ends: 135 [2023-12-21 21:31:01,233 INFO L226 Difference]: Without dead ends: 125 [2023-12-21 21:31:01,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:31:01,234 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:01,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 165 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:31:01,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-21 21:31:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-12-21 21:31:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 114 states have (on average 1.5350877192982457) internal successors, (175), 116 states have internal predecessors, (175), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 21:31:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 193 transitions. [2023-12-21 21:31:01,243 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 193 transitions. Word has length 106 [2023-12-21 21:31:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:01,243 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 193 transitions. [2023-12-21 21:31:01,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:31:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 193 transitions. [2023-12-21 21:31:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 21:31:01,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:01,244 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:31:01,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 21:31:01,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:01,446 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:01,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:01,447 INFO L85 PathProgramCache]: Analyzing trace with hash 864613685, now seen corresponding path program 1 times [2023-12-21 21:31:01,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:01,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035284717] [2023-12-21 21:31:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:01,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:01,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:01,470 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:01,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 21:31:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:01,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 21:31:01,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 19 proven. 737 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 21:31:02,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 3 proven. 743 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 21:31:04,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:04,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035284717] [2023-12-21 21:31:04,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035284717] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:04,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:04,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-12-21 21:31:04,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557357454] [2023-12-21 21:31:04,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:04,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 21:31:04,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:04,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 21:31:04,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 21:31:04,676 INFO L87 Difference]: Start difference. First operand 125 states and 193 transitions. Second operand has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:31:18,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:18,791 INFO L93 Difference]: Finished difference Result 498 states and 771 transitions. [2023-12-21 21:31:18,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-21 21:31:18,792 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 106 [2023-12-21 21:31:18,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:18,794 INFO L225 Difference]: With dead ends: 498 [2023-12-21 21:31:18,794 INFO L226 Difference]: Without dead ends: 379 [2023-12-21 21:31:18,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=2901, Invalid=6029, Unknown=0, NotChecked=0, Total=8930 [2023-12-21 21:31:18,796 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 1486 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 5492 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 5540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 5492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:18,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 2727 Invalid, 5540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 5492 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-21 21:31:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-21 21:31:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 193. [2023-12-21 21:31:18,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.5824175824175823) internal successors, (288), 184 states have internal predecessors, (288), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-21 21:31:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 306 transitions. [2023-12-21 21:31:18,834 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 306 transitions. Word has length 106 [2023-12-21 21:31:18,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:18,835 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 306 transitions. [2023-12-21 21:31:18,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:31:18,835 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 306 transitions. [2023-12-21 21:31:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 21:31:18,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:18,836 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:31:18,840 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 (15)] Ended with exit code 0 [2023-12-21 21:31:19,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:19,039 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:19,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:19,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1080606654, now seen corresponding path program 1 times [2023-12-21 21:31:19,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:19,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904888384] [2023-12-21 21:31:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:19,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:19,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:19,041 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:19,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 21:31:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:19,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-21 21:31:19,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 7 proven. 834 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 21:31:20,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 7 proven. 834 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 21:31:25,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:25,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904888384] [2023-12-21 21:31:25,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904888384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:25,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:25,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 66 [2023-12-21 21:31:25,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921914801] [2023-12-21 21:31:25,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:25,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-21 21:31:25,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:25,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-21 21:31:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=766, Invalid=3524, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 21:31:25,239 INFO L87 Difference]: Start difference. First operand 193 states and 306 transitions. Second operand has 66 states, 63 states have (on average 2.888888888888889) internal successors, (182), 62 states have internal predecessors, (182), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 21:32:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:10,133 INFO L93 Difference]: Finished difference Result 471 states and 1018 transitions. [2023-12-21 21:32:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-12-21 21:32:10,134 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 63 states have (on average 2.888888888888889) internal successors, (182), 62 states have internal predecessors, (182), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) Word has length 111 [2023-12-21 21:32:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:10,136 INFO L225 Difference]: With dead ends: 471 [2023-12-21 21:32:10,136 INFO L226 Difference]: Without dead ends: 450 [2023-12-21 21:32:10,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18854 ImplicationChecksByTransitivity, 37.9s TimeCoverageRelationStatistics Valid=11300, Invalid=45582, Unknown=0, NotChecked=0, Total=56882 [2023-12-21 21:32:10,147 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 2611 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 10498 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 11118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 10498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:10,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2617 Valid, 2595 Invalid, 11118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 10498 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-21 21:32:10,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-12-21 21:32:10,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 210. [2023-12-21 21:32:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 196 states have (on average 1.5765306122448979) internal successors, (309), 199 states have internal predecessors, (309), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2023-12-21 21:32:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 341 transitions. [2023-12-21 21:32:10,196 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 341 transitions. Word has length 111 [2023-12-21 21:32:10,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:10,196 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 341 transitions. [2023-12-21 21:32:10,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 63 states have (on average 2.888888888888889) internal successors, (182), 62 states have internal predecessors, (182), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 21:32:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 341 transitions. [2023-12-21 21:32:10,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 21:32:10,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:10,197 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:10,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-21 21:32:10,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:10,401 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:10,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:10,401 INFO L85 PathProgramCache]: Analyzing trace with hash 870264239, now seen corresponding path program 1 times [2023-12-21 21:32:10,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:10,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87959598] [2023-12-21 21:32:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:32:10,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:10,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:10,403 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:10,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 21:32:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:32:10,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 21:32:10,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-12-21 21:32:10,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:32:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-12-21 21:32:10,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:10,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87959598] [2023-12-21 21:32:10,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87959598] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:32:10,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:32:10,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-21 21:32:10,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598657258] [2023-12-21 21:32:10,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:32:10,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 21:32:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:32:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 21:32:10,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:32:10,572 INFO L87 Difference]: Start difference. First operand 210 states and 341 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:32:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:10,627 INFO L93 Difference]: Finished difference Result 240 states and 388 transitions. [2023-12-21 21:32:10,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:32:10,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 115 [2023-12-21 21:32:10,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:10,633 INFO L225 Difference]: With dead ends: 240 [2023-12-21 21:32:10,633 INFO L226 Difference]: Without dead ends: 235 [2023-12-21 21:32:10,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:32:10,634 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 18 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:10,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 254 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:32:10,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-21 21:32:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 232. [2023-12-21 21:32:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 216 states have (on average 1.5555555555555556) internal successors, (336), 217 states have internal predecessors, (336), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (34), 11 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-21 21:32:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 379 transitions. [2023-12-21 21:32:10,658 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 379 transitions. Word has length 115 [2023-12-21 21:32:10,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:10,658 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 379 transitions. [2023-12-21 21:32:10,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:32:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 379 transitions. [2023-12-21 21:32:10,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 21:32:10,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:10,659 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:10,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-21 21:32:10,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:10,862 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:10,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:10,863 INFO L85 PathProgramCache]: Analyzing trace with hash -373202027, now seen corresponding path program 1 times [2023-12-21 21:32:10,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:10,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317019743] [2023-12-21 21:32:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:32:10,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:10,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:10,881 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:10,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 21:32:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:32:10,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:32:10,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2023-12-21 21:32:10,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:32:10,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:10,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317019743] [2023-12-21 21:32:10,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317019743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:32:10,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:32:10,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:32:10,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475668951] [2023-12-21 21:32:10,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:32:10,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:32:10,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:32:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:32:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:32:10,965 INFO L87 Difference]: Start difference. First operand 232 states and 379 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:32:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:11,005 INFO L93 Difference]: Finished difference Result 253 states and 401 transitions. [2023-12-21 21:32:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:32:11,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 117 [2023-12-21 21:32:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:11,007 INFO L225 Difference]: With dead ends: 253 [2023-12-21 21:32:11,007 INFO L226 Difference]: Without dead ends: 247 [2023-12-21 21:32:11,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:32:11,008 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 3 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:11,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 151 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:32:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-21 21:32:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2023-12-21 21:32:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 229 states have (on average 1.5283842794759825) internal successors, (350), 230 states have internal predecessors, (350), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (34), 11 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-21 21:32:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 393 transitions. [2023-12-21 21:32:11,041 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 393 transitions. Word has length 117 [2023-12-21 21:32:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:11,041 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 393 transitions. [2023-12-21 21:32:11,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:32:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 393 transitions. [2023-12-21 21:32:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 21:32:11,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:11,042 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:11,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-21 21:32:11,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:11,245 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:11,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:11,246 INFO L85 PathProgramCache]: Analyzing trace with hash -315943725, now seen corresponding path program 1 times [2023-12-21 21:32:11,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:11,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618336978] [2023-12-21 21:32:11,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:32:11,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:11,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:11,250 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:11,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-21 21:32:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:32:11,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 21:32:11,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2023-12-21 21:32:11,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:32:11,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:11,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618336978] [2023-12-21 21:32:11,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618336978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:32:11,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:32:11,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 21:32:11,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793891785] [2023-12-21 21:32:11,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:32:11,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 21:32:11,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:32:11,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 21:32:11,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:32:11,321 INFO L87 Difference]: Start difference. First operand 245 states and 393 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:32:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:11,394 INFO L93 Difference]: Finished difference Result 251 states and 398 transitions. [2023-12-21 21:32:11,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:32:11,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 117 [2023-12-21 21:32:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:11,397 INFO L225 Difference]: With dead ends: 251 [2023-12-21 21:32:11,397 INFO L226 Difference]: Without dead ends: 235 [2023-12-21 21:32:11,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 21:32:11,398 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 2 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:11,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 265 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:32:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-21 21:32:11,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2023-12-21 21:32:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 218 states have (on average 1.536697247706422) internal successors, (335), 220 states have internal predecessors, (335), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 9 states have call predecessors, (28), 7 states have call successors, (28) [2023-12-21 21:32:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 371 transitions. [2023-12-21 21:32:11,424 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 371 transitions. Word has length 117 [2023-12-21 21:32:11,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:11,424 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 371 transitions. [2023-12-21 21:32:11,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:32:11,425 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 371 transitions. [2023-12-21 21:32:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 21:32:11,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:11,425 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:11,443 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 (19)] Forceful destruction successful, exit code 0 [2023-12-21 21:32:11,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:11,644 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:11,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:11,644 INFO L85 PathProgramCache]: Analyzing trace with hash 926590944, now seen corresponding path program 1 times [2023-12-21 21:32:11,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:11,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066377315] [2023-12-21 21:32:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:32:11,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:11,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:11,646 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:11,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-21 21:32:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:32:11,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 21:32:11,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-12-21 21:32:11,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:32:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-12-21 21:32:11,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:11,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066377315] [2023-12-21 21:32:11,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066377315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:32:11,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:32:11,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-21 21:32:11,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101147028] [2023-12-21 21:32:11,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:32:11,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 21:32:11,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:32:11,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 21:32:11,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 21:32:11,783 INFO L87 Difference]: Start difference. First operand 233 states and 371 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:32:11,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:11,864 INFO L93 Difference]: Finished difference Result 242 states and 379 transitions. [2023-12-21 21:32:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 21:32:11,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 118 [2023-12-21 21:32:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:11,865 INFO L225 Difference]: With dead ends: 242 [2023-12-21 21:32:11,865 INFO L226 Difference]: Without dead ends: 217 [2023-12-21 21:32:11,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-21 21:32:11,866 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 5 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:11,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 361 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:32:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-21 21:32:11,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2023-12-21 21:32:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 202 states have (on average 1.5544554455445545) internal successors, (314), 205 states have internal predecessors, (314), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2023-12-21 21:32:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 340 transitions. [2023-12-21 21:32:11,888 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 340 transitions. Word has length 118 [2023-12-21 21:32:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:11,888 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 340 transitions. [2023-12-21 21:32:11,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:32:11,889 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 340 transitions. [2023-12-21 21:32:11,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 21:32:11,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:11,890 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:11,893 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 (20)] Forceful destruction successful, exit code 0 [2023-12-21 21:32:12,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:12,093 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:12,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:12,094 INFO L85 PathProgramCache]: Analyzing trace with hash -725003366, now seen corresponding path program 2 times [2023-12-21 21:32:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:12,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147661509] [2023-12-21 21:32:12,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:32:12,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:12,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:12,095 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:12,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-21 21:32:12,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 21:32:12,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:32:12,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:32:12,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2023-12-21 21:32:12,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:32:12,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:12,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147661509] [2023-12-21 21:32:12,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147661509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:32:12,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:32:12,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 21:32:12,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492317068] [2023-12-21 21:32:12,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:32:12,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:32:12,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:32:12,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:32:12,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:32:12,145 INFO L87 Difference]: Start difference. First operand 216 states and 340 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:32:12,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:12,231 INFO L93 Difference]: Finished difference Result 236 states and 365 transitions. [2023-12-21 21:32:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:32:12,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 119 [2023-12-21 21:32:12,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:12,232 INFO L225 Difference]: With dead ends: 236 [2023-12-21 21:32:12,233 INFO L226 Difference]: Without dead ends: 225 [2023-12-21 21:32:12,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:32:12,235 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 27 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:12,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 225 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:32:12,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-21 21:32:12,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 217. [2023-12-21 21:32:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 203 states have (on average 1.5517241379310345) internal successors, (315), 206 states have internal predecessors, (315), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2023-12-21 21:32:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 341 transitions. [2023-12-21 21:32:12,261 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 341 transitions. Word has length 119 [2023-12-21 21:32:12,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:12,261 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 341 transitions. [2023-12-21 21:32:12,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:32:12,261 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 341 transitions. [2023-12-21 21:32:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 21:32:12,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:12,262 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:12,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-21 21:32:12,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:12,464 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:12,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:12,464 INFO L85 PathProgramCache]: Analyzing trace with hash -466837928, now seen corresponding path program 1 times [2023-12-21 21:32:12,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:12,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857988922] [2023-12-21 21:32:12,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:32:12,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:12,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:12,475 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:12,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 21:32:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:32:12,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 21:32:12,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 3 proven. 838 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 21:32:14,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:32:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 3 proven. 838 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 21:32:18,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:18,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857988922] [2023-12-21 21:32:18,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857988922] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:32:18,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:32:18,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2023-12-21 21:32:18,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710138713] [2023-12-21 21:32:18,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:32:18,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 21:32:18,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:32:18,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 21:32:18,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 21:32:18,275 INFO L87 Difference]: Start difference. First operand 217 states and 341 transitions. Second operand has 64 states, 62 states have (on average 2.9838709677419355) internal successors, (185), 62 states have internal predecessors, (185), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 21:32:56,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:56,592 INFO L93 Difference]: Finished difference Result 493 states and 780 transitions. [2023-12-21 21:32:56,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2023-12-21 21:32:56,592 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 62 states have (on average 2.9838709677419355) internal successors, (185), 62 states have internal predecessors, (185), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 119 [2023-12-21 21:32:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:56,594 INFO L225 Difference]: With dead ends: 493 [2023-12-21 21:32:56,594 INFO L226 Difference]: Without dead ends: 480 [2023-12-21 21:32:56,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10219 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=8299, Invalid=26483, Unknown=0, NotChecked=0, Total=34782 [2023-12-21 21:32:56,598 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 2426 mSDsluCounter, 3614 mSDsCounter, 0 mSdLazyCounter, 7893 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2426 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 8460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 7893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:56,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2426 Valid, 3729 Invalid, 8460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 7893 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-21 21:32:56,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-12-21 21:32:56,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 219. [2023-12-21 21:32:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 205 states have (on average 1.551219512195122) internal successors, (318), 207 states have internal predecessors, (318), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2023-12-21 21:32:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 344 transitions. [2023-12-21 21:32:56,649 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 344 transitions. Word has length 119 [2023-12-21 21:32:56,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:56,650 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 344 transitions. [2023-12-21 21:32:56,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 62 states have (on average 2.9838709677419355) internal successors, (185), 62 states have internal predecessors, (185), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 21:32:56,650 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 344 transitions. [2023-12-21 21:32:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 21:32:56,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:56,653 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:56,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 21:32:56,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:56,858 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:56,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:56,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1354915793, now seen corresponding path program 1 times [2023-12-21 21:32:56,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:56,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630164125] [2023-12-21 21:32:56,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:32:56,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:56,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:56,871 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:56,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 21:32:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:32:56,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:32:56,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2023-12-21 21:32:56,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:32:56,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:56,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630164125] [2023-12-21 21:32:56,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630164125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:32:56,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:32:56,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:32:56,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747507478] [2023-12-21 21:32:56,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:32:56,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:32:56,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:32:56,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:32:56,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:32:56,957 INFO L87 Difference]: Start difference. First operand 219 states and 344 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:32:56,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:56,992 INFO L93 Difference]: Finished difference Result 233 states and 358 transitions. [2023-12-21 21:32:56,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:32:56,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 120 [2023-12-21 21:32:56,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:56,994 INFO L225 Difference]: With dead ends: 233 [2023-12-21 21:32:56,994 INFO L226 Difference]: Without dead ends: 228 [2023-12-21 21:32:56,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:32:56,994 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 3 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:56,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 162 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:32:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-21 21:32:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2023-12-21 21:32:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 211 states have (on average 1.5355450236966826) internal successors, (324), 213 states have internal predecessors, (324), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2023-12-21 21:32:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 350 transitions. [2023-12-21 21:32:57,016 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 350 transitions. Word has length 120 [2023-12-21 21:32:57,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:57,016 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 350 transitions. [2023-12-21 21:32:57,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-21 21:32:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 350 transitions. [2023-12-21 21:32:57,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 21:32:57,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:57,017 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:57,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-21 21:32:57,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:57,220 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:57,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:57,220 INFO L85 PathProgramCache]: Analyzing trace with hash 197813247, now seen corresponding path program 1 times [2023-12-21 21:32:57,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:57,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698547452] [2023-12-21 21:32:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:32:57,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:57,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:57,222 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:57,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-21 21:32:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:32:57,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-21 21:32:57,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 3 proven. 838 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 21:32:58,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:32:59,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:59,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698547452] [2023-12-21 21:32:59,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698547452] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 21:32:59,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [227892638] [2023-12-21 21:32:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:32:59,442 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 21:32:59,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 21:32:59,443 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 21:32:59,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-21 21:32:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:32:59,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-21 21:32:59,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:33:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 3 proven. 838 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 21:33:00,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:33:01,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [227892638] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 21:33:01,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:33:01,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 38 [2023-12-21 21:33:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746219730] [2023-12-21 21:33:01,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:33:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 21:33:01,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:33:01,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 21:33:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2185, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 21:33:01,361 INFO L87 Difference]: Start difference. First operand 225 states and 350 transitions. Second operand has 38 states, 37 states have (on average 2.945945945945946) internal successors, (109), 37 states have internal predecessors, (109), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:33:10,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:33:12,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:33:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:33:13,765 INFO L93 Difference]: Finished difference Result 363 states and 518 transitions. [2023-12-21 21:33:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 21:33:13,766 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.945945945945946) internal successors, (109), 37 states have internal predecessors, (109), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 121 [2023-12-21 21:33:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:33:13,767 INFO L225 Difference]: With dead ends: 363 [2023-12-21 21:33:13,768 INFO L226 Difference]: Without dead ends: 350 [2023-12-21 21:33:13,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 21:33:13,769 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 142 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 7650 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 7651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-12-21 21:33:13,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2601 Invalid, 7651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7650 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-12-21 21:33:13,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-21 21:33:13,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 237. [2023-12-21 21:33:13,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 220 states have (on average 1.5227272727272727) internal successors, (335), 222 states have internal predecessors, (335), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (32), 11 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-21 21:33:13,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 376 transitions. [2023-12-21 21:33:13,795 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 376 transitions. Word has length 121 [2023-12-21 21:33:13,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:33:13,795 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 376 transitions. [2023-12-21 21:33:13,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.945945945945946) internal successors, (109), 37 states have internal predecessors, (109), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:33:13,795 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 376 transitions. [2023-12-21 21:33:13,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 21:33:13,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:33:13,798 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:33:13,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-21 21:33:14,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-12-21 21:33:14,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-21 21:33:14,205 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:33:14,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:33:14,206 INFO L85 PathProgramCache]: Analyzing trace with hash 122500629, now seen corresponding path program 2 times [2023-12-21 21:33:14,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:33:14,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950868446] [2023-12-21 21:33:14,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:33:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:33:14,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:33:14,212 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:33:14,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-21 21:33:14,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:33:14,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:33:14,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-21 21:33:14,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:33:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 3 proven. 838 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 21:33:16,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:33:16,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:33:16,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950868446] [2023-12-21 21:33:16,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950868446] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 21:33:16,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1524024242] [2023-12-21 21:33:16,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:33:16,781 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 21:33:16,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 21:33:16,783 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 21:33:16,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-12-21 21:33:16,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:33:16,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:33:16,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-21 21:33:16,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:33:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 3 proven. 838 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 21:33:17,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:33:17,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1524024242] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 21:33:17,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:33:17,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2023-12-21 21:33:17,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145353949] [2023-12-21 21:33:17,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:33:17,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 21:33:17,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:33:17,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 21:33:17,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1462, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 21:33:17,759 INFO L87 Difference]: Start difference. First operand 237 states and 376 transitions. Second operand has 35 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 34 states have internal predecessors, (104), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:33:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:33:25,355 INFO L93 Difference]: Finished difference Result 360 states and 513 transitions. [2023-12-21 21:33:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 21:33:25,356 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 34 states have internal predecessors, (104), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 122 [2023-12-21 21:33:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:33:25,373 INFO L225 Difference]: With dead ends: 360 [2023-12-21 21:33:25,373 INFO L226 Difference]: Without dead ends: 347 [2023-12-21 21:33:25,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 236 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 21:33:25,374 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 128 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 6830 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 6830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:33:25,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2591 Invalid, 6830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6830 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-21 21:33:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-21 21:33:25,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 239. [2023-12-21 21:33:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 222 states have (on average 1.518018018018018) internal successors, (337), 224 states have internal predecessors, (337), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (32), 11 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-21 21:33:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 378 transitions. [2023-12-21 21:33:25,404 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 378 transitions. Word has length 122 [2023-12-21 21:33:25,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:33:25,404 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 378 transitions. [2023-12-21 21:33:25,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 34 states have internal predecessors, (104), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:33:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 378 transitions. [2023-12-21 21:33:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 21:33:25,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:33:25,405 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:33:25,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2023-12-21 21:33:25,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-21 21:33:25,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:33:25,808 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:33:25,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:33:25,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1157363049, now seen corresponding path program 1 times [2023-12-21 21:33:25,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:33:25,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813586607] [2023-12-21 21:33:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:33:25,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:33:25,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:33:25,810 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:33:25,815 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 (28)] Waiting until timeout for monitored process [2023-12-21 21:33:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:33:25,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 21:33:25,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:33:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 3 proven. 838 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 21:33:27,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:33:28,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:33:28,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813586607] [2023-12-21 21:33:28,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813586607] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 21:33:28,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [567786422] [2023-12-21 21:33:28,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:33:28,959 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 21:33:28,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 21:33:28,960 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 21:33:28,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-21 21:33:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:33:29,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 21:33:29,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:33:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 3 proven. 838 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 21:33:29,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:33:29,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [567786422] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 21:33:29,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:33:29,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2023-12-21 21:33:29,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276799987] [2023-12-21 21:33:29,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:33:29,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 21:33:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:33:29,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 21:33:29,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1533, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 21:33:29,956 INFO L87 Difference]: Start difference. First operand 239 states and 378 transitions. Second operand has 35 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 34 states have internal predecessors, (104), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:33:41,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:33:43,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:33:43,657 INFO L93 Difference]: Finished difference Result 360 states and 512 transitions. [2023-12-21 21:33:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 21:33:43,658 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 34 states have internal predecessors, (104), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 122 [2023-12-21 21:33:43,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:33:43,660 INFO L225 Difference]: With dead ends: 360 [2023-12-21 21:33:43,660 INFO L226 Difference]: Without dead ends: 347 [2023-12-21 21:33:43,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 234 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=135, Invalid=1757, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 21:33:43,661 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 121 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 7047 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 7048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7047 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:33:43,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 2722 Invalid, 7048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7047 Invalid, 1 Unknown, 0 Unchecked, 13.2s Time] [2023-12-21 21:33:43,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-21 21:33:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 237. [2023-12-21 21:33:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 220 states have (on average 1.518181818181818) internal successors, (334), 222 states have internal predecessors, (334), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (32), 11 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-21 21:33:43,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 375 transitions. [2023-12-21 21:33:43,699 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 375 transitions. Word has length 122 [2023-12-21 21:33:43,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:33:43,700 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 375 transitions. [2023-12-21 21:33:43,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.0588235294117645) internal successors, (104), 34 states have internal predecessors, (104), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:33:43,700 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 375 transitions. [2023-12-21 21:33:43,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 21:33:43,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:33:43,701 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:33:43,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-12-21 21:33:43,908 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 (28)] Forceful destruction successful, exit code 0 [2023-12-21 21:33:44,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:33:44,108 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:33:44,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:33:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash 765664995, now seen corresponding path program 1 times [2023-12-21 21:33:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:33:44,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447561806] [2023-12-21 21:33:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:33:44,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:33:44,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:33:44,110 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:33:44,111 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 (30)] Waiting until timeout for monitored process [2023-12-21 21:33:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:33:44,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-21 21:33:44,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:34:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 3 proven. 838 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 21:34:00,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:34:30,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:34:30,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447561806] [2023-12-21 21:34:30,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447561806] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 21:34:30,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [867806104] [2023-12-21 21:34:30,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:34:30,396 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 21:34:30,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 21:34:30,397 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 21:34:30,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-12-21 21:34:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:34:30,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 100 conjunts are in the unsatisfiable core [2023-12-21 21:34:30,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:36:25,645 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 12 proven. 834 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 21:36:25,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:36:52,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [867806104] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 21:36:52,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:36:52,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 45] total 53 [2023-12-21 21:36:52,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740244967] [2023-12-21 21:36:52,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:36:52,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 21:36:52,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:36:52,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 21:36:52,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=4273, Unknown=26, NotChecked=0, Total=4556 [2023-12-21 21:36:52,544 INFO L87 Difference]: Start difference. First operand 237 states and 375 transitions. Second operand has 53 states, 50 states have (on average 2.46) internal successors, (123), 51 states have internal predecessors, (123), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 21:38:55,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:39:01,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:39:06,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:39:12,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:39:17,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:39:26,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:39:30,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:39:35,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:39:40,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:39:50,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:39:55,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:39:59,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:40:04,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:40:16,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:40:21,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:40:26,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:40:39,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:40:43,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:40:48,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:40:53,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:40:58,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:41:10,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:41:14,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:41:18,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:41:23,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:41:28,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:41:32,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:41:37,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:41:49,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:41:53,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:41:57,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:42:02,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:42:06,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:42:10,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:42:15,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:42:28,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:42:32,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:43:11,968 WARN L293 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 53 DAG size of output: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 21:43:16,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:43:20,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:43:24,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:43:28,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:43:32,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:43:37,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:43:42,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:43:46,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:43:50,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:43:55,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:43:59,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:44:03,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:44:07,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:44:11,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:44:15,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:44:19,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:44:23,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:44:27,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:44:31,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:44:52,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:44:56,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:45:00,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:45:04,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:45:08,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:45:12,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:45:16,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:45:20,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:45:24,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-21 21:45:27,521 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 21:45:27,521 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 21:45:27,521 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 21:45:28,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2023-12-21 21:45:28,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-21 21:45:28,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:45:28,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 212 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 282.4s TimeCoverageRelationStatistics Valid=402, Invalid=5567, Unknown=37, NotChecked=0, Total=6006 [2023-12-21 21:45:28,704 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 153 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 8303 mSolverCounterSat, 3 mSolverCounterUnsat, 66 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 402.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 8373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8303 IncrementalHoareTripleChecker+Invalid, 66 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 412.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:28,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 3146 Invalid, 8373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 8303 Invalid, 66 Unknown, 0 Unchecked, 412.5s Time] [2023-12-21 21:45:28,719 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 21:45:28,720 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-21 21:45:28,722 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-21 21:45:28,724 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:45:28,725 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 21:45:28,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 09:45:28 BoogieIcfgContainer [2023-12-21 21:45:28,727 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 21:45:28,727 INFO L158 Benchmark]: Toolchain (without parser) took 880777.16ms. Allocated memory was 286.3MB in the beginning and 496.0MB in the end (delta: 209.7MB). Free memory was 241.8MB in the beginning and 324.2MB in the end (delta: -82.5MB). Peak memory consumption was 128.8MB. Max. memory is 8.0GB. [2023-12-21 21:45:28,727 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory is still 151.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 21:45:28,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.02ms. Allocated memory is still 286.3MB. Free memory was 241.4MB in the beginning and 227.6MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 21:45:28,727 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.48ms. Allocated memory is still 286.3MB. Free memory was 227.6MB in the beginning and 225.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 21:45:28,727 INFO L158 Benchmark]: Boogie Preprocessor took 47.19ms. Allocated memory is still 286.3MB. Free memory was 225.7MB in the beginning and 223.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 21:45:28,727 INFO L158 Benchmark]: RCFGBuilder took 386.20ms. Allocated memory is still 286.3MB. Free memory was 223.6MB in the beginning and 206.5MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-21 21:45:28,728 INFO L158 Benchmark]: TraceAbstraction took 880096.54ms. Allocated memory was 286.3MB in the beginning and 496.0MB in the end (delta: 209.7MB). Free memory was 205.7MB in the beginning and 324.2MB in the end (delta: -118.5MB). Peak memory consumption was 92.1MB. Max. memory is 8.0GB. [2023-12-21 21:45:28,728 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory is still 151.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.02ms. Allocated memory is still 286.3MB. Free memory was 241.4MB in the beginning and 227.6MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.48ms. Allocated memory is still 286.3MB. Free memory was 227.6MB in the beginning and 225.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.19ms. Allocated memory is still 286.3MB. Free memory was 225.7MB in the beginning and 223.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 386.20ms. Allocated memory is still 286.3MB. Free memory was 223.6MB in the beginning and 206.5MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 880096.54ms. Allocated memory was 286.3MB in the beginning and 496.0MB in the end (delta: 209.7MB). Free memory was 205.7MB in the beginning and 324.2MB in the end (delta: -118.5MB). Peak memory consumption was 92.1MB. 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: 17]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 17). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 880.1s, OverallIterations: 26, TraceHistogramMax: 24, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 653.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 mSolverCounterUnknown, 8400 SdHoareTripleChecker+Valid, 471.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8394 mSDsluCounter, 25970 SdHoareTripleChecker+Invalid, 455.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24286 mSDsCounter, 1382 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58382 IncrementalHoareTripleChecker+Invalid, 59832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1382 mSolverCounterUnsat, 1684 mSDtfsCounter, 58382 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4340 GetRequests, 3379 SyntacticMatches, 8 SemanticMatches, 953 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32553 ImplicationChecksByTransitivity, 378.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=245occurred in iteration=17, InterpolantAutomatonStates: 769, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 25 MinimizatonAttempts, 1361 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 217.8s InterpolantComputationTime, 2734 NumberOfCodeBlocks, 2467 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 3602 ConstructedInterpolants, 40 QuantifiedInterpolants, 41000 SizeOfPredicates, 168 NumberOfNonLiveVariables, 4623 ConjunctsInSsa, 845 ConjunctsInUnsatCore, 41 InterpolantComputations, 11 PerfectInterpolantSequences, 8476/21052 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