/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/nla-digbench-scaling/divbin2_unwindbound50.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:47:33,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:47:33,326 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:47:33,331 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:47:33,331 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:47:33,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:47:33,354 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:47:33,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:47:33,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:47:33,357 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:47:33,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:47:33,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:47:33,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:47:33,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:47:33,359 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:47:33,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:47:33,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:47:33,360 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:47:33,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:47:33,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:47:33,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:47:33,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:47:33,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:47:33,361 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:47:33,361 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:47:33,361 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:47:33,362 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:47:33,362 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:47:33,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:47:33,362 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:47:33,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:47:33,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:47:33,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:47:33,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:47:33,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:47:33,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:47:33,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:47:33,364 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:47:33,364 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:47:33,364 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:47:33,364 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:47:33,364 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:47:33,365 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:47:33,365 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:47:33,365 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:47:33,365 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:47:33,365 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:47:33,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:47:33,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:47:33,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:47:33,608 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:47:33,610 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:47:33,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound50.i [2023-12-16 16:47:34,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:47:34,779 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:47:34,779 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound50.i [2023-12-16 16:47:34,786 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcc35db10/50a6a4800147433599559ccfed4ae3f6/FLAG11078103c [2023-12-16 16:47:34,802 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcc35db10/50a6a4800147433599559ccfed4ae3f6 [2023-12-16 16:47:34,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:47:34,806 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:47:34,808 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:47:34,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:47:34,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:47:34,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:34,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a34a9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34, skipping insertion in model container [2023-12-16 16:47:34,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:34,830 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:47:34,955 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound50.i[951,964] [2023-12-16 16:47:34,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:47:34,978 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:47:34,986 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound50.i[951,964] [2023-12-16 16:47:34,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:47:34,999 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:47:34,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34 WrapperNode [2023-12-16 16:47:34,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:47:35,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:47:35,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:47:35,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:47:35,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,025 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2023-12-16 16:47:35,026 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:47:35,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:47:35,026 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:47:35,027 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:47:35,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,051 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 16:47:35,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,059 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:47:35,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:47:35,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:47:35,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:47:35,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (1/1) ... [2023-12-16 16:47:35,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:47:35,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:47:35,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 16:47:35,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 16:47:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:47:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:47:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:47:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:47:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 16:47:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 16:47:35,170 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:47:35,173 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:47:35,342 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:47:35,359 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:47:35,363 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 16:47:35,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:47:35 BoogieIcfgContainer [2023-12-16 16:47:35,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:47:35,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:47:35,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:47:35,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:47:35,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:47:34" (1/3) ... [2023-12-16 16:47:35,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d848c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:47:35, skipping insertion in model container [2023-12-16 16:47:35,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:34" (2/3) ... [2023-12-16 16:47:35,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d848c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:47:35, skipping insertion in model container [2023-12-16 16:47:35,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:47:35" (3/3) ... [2023-12-16 16:47:35,371 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound50.i [2023-12-16 16:47:35,384 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:47:35,384 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:47:35,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:47:35,426 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;@34e6c4c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:47:35,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:47:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 16:47:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-16 16:47:35,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:35,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:35,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:35,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:35,438 INFO L85 PathProgramCache]: Analyzing trace with hash 774102990, now seen corresponding path program 1 times [2023-12-16 16:47:35,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:35,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838851298] [2023-12-16 16:47:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:35,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:35,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:35,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:35,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 16:47:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:35,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 16:47:35,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:35,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:47:35,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:35,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838851298] [2023-12-16 16:47:35,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838851298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:47:35,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:47:35,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:47:35,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205922232] [2023-12-16 16:47:35,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:47:35,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 16:47:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:35,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 16:47:35,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:47:35,563 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:35,586 INFO L93 Difference]: Finished difference Result 32 states and 47 transitions. [2023-12-16 16:47:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 16:47:35,588 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-16 16:47:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:35,592 INFO L225 Difference]: With dead ends: 32 [2023-12-16 16:47:35,593 INFO L226 Difference]: Without dead ends: 16 [2023-12-16 16:47:35,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:47:35,598 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:35,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:47:35,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-16 16:47:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-16 16:47:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:47:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2023-12-16 16:47:35,625 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 7 [2023-12-16 16:47:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:35,626 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2023-12-16 16:47:35,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:35,626 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2023-12-16 16:47:35,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 16:47:35,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:35,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:35,637 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 [2023-12-16 16:47:35,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:35,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:35,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:35,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1084410172, now seen corresponding path program 1 times [2023-12-16 16:47:35,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:35,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444166399] [2023-12-16 16:47:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:35,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:35,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:35,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:35,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 16:47:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:35,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 16:47:35,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:35,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:47:35,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:35,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444166399] [2023-12-16 16:47:35,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444166399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:47:35,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:47:35,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 16:47:35,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535005572] [2023-12-16 16:47:35,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:47:35,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 16:47:35,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:35,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 16:47:35,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 16:47:35,913 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:35,927 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2023-12-16 16:47:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 16:47:35,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 16:47:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:35,928 INFO L225 Difference]: With dead ends: 30 [2023-12-16 16:47:35,929 INFO L226 Difference]: Without dead ends: 18 [2023-12-16 16:47:35,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 16:47:35,930 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:35,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:47:35,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-16 16:47:35,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-16 16:47:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:47:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2023-12-16 16:47:35,934 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2023-12-16 16:47:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:35,934 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2023-12-16 16:47:35,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2023-12-16 16:47:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 16:47:35,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:35,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:35,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 16:47:36,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:36,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:36,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1068718015, now seen corresponding path program 1 times [2023-12-16 16:47:36,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:36,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622822120] [2023-12-16 16:47:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:36,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:36,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:36,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:36,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 16:47:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:36,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:47:36,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:36,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:47:36,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:36,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622822120] [2023-12-16 16:47:36,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622822120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:47:36,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:47:36,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 16:47:36,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351870552] [2023-12-16 16:47:36,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:47:36,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:47:36,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:36,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:47:36,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:47:36,230 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:36,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:36,268 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2023-12-16 16:47:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:47:36,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-16 16:47:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:36,269 INFO L225 Difference]: With dead ends: 29 [2023-12-16 16:47:36,269 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 16:47:36,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:47:36,270 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:36,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 67 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:47:36,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 16:47:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-12-16 16:47:36,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:47:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-12-16 16:47:36,274 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 10 [2023-12-16 16:47:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:36,274 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-12-16 16:47:36,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:36,274 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-12-16 16:47:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 16:47:36,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:36,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:36,279 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 [2023-12-16 16:47:36,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:36,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:36,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1066930555, now seen corresponding path program 1 times [2023-12-16 16:47:36,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:36,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680947645] [2023-12-16 16:47:36,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:36,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:36,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:36,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:36,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 16:47:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:36,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 16:47:36,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:36,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:47:36,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:36,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680947645] [2023-12-16 16:47:36,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680947645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:47:36,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:47:36,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 16:47:36,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664970139] [2023-12-16 16:47:36,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:47:36,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:47:36,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:36,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:47:36,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:47:36,679 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:36,806 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2023-12-16 16:47:36,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:47:36,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-16 16:47:36,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:36,807 INFO L225 Difference]: With dead ends: 30 [2023-12-16 16:47:36,807 INFO L226 Difference]: Without dead ends: 27 [2023-12-16 16:47:36,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:47:36,808 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:36,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 54 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:47:36,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-16 16:47:36,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-16 16:47:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 16:47:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-12-16 16:47:36,812 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 10 [2023-12-16 16:47:36,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:36,813 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-12-16 16:47:36,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:36,813 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-12-16 16:47:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-16 16:47:36,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:36,813 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:36,828 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 (5)] Ended with exit code 0 [2023-12-16 16:47:37,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:37,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:37,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:37,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1531048614, now seen corresponding path program 1 times [2023-12-16 16:47:37,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:37,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652707672] [2023-12-16 16:47:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:37,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:37,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:37,016 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:37,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:47:37,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:37,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 16:47:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:37,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:47:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:37,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:37,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652707672] [2023-12-16 16:47:37,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652707672] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:47:37,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:47:37,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-16 16:47:37,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753664938] [2023-12-16 16:47:37,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:47:37,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 16:47:37,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:37,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 16:47:37,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 16:47:37,102 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:37,302 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2023-12-16 16:47:37,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 16:47:37,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-16 16:47:37,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:37,305 INFO L225 Difference]: With dead ends: 61 [2023-12-16 16:47:37,305 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 16:47:37,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:47:37,306 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:37,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 103 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 16:47:37,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 16:47:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2023-12-16 16:47:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 30 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 16:47:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2023-12-16 16:47:37,312 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 12 [2023-12-16 16:47:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:37,312 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2023-12-16 16:47:37,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2023-12-16 16:47:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 16:47:37,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:37,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:37,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 16:47:37,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:37,521 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:37,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:37,522 INFO L85 PathProgramCache]: Analyzing trace with hash -107828201, now seen corresponding path program 1 times [2023-12-16 16:47:37,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:37,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712840878] [2023-12-16 16:47:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:37,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:37,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:37,523 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:37,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 16:47:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:37,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 16:47:37,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:37,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:47:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:37,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:37,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712840878] [2023-12-16 16:47:37,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712840878] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:47:37,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:47:37,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 16:47:37,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711854424] [2023-12-16 16:47:37,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:47:37,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 16:47:37,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:37,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 16:47:37,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:47:37,653 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:37,979 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2023-12-16 16:47:37,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 16:47:37,981 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-16 16:47:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:37,982 INFO L225 Difference]: With dead ends: 86 [2023-12-16 16:47:37,982 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 16:47:37,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2023-12-16 16:47:37,983 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 107 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:37,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 124 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 16:47:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 16:47:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2023-12-16 16:47:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 61 states have internal predecessors, (79), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 16:47:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 93 transitions. [2023-12-16 16:47:37,991 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 93 transitions. Word has length 13 [2023-12-16 16:47:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:37,991 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 93 transitions. [2023-12-16 16:47:37,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 93 transitions. [2023-12-16 16:47:37,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 16:47:37,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:37,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:38,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-16 16:47:38,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:38,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:38,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:38,192 INFO L85 PathProgramCache]: Analyzing trace with hash -106040741, now seen corresponding path program 1 times [2023-12-16 16:47:38,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:38,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366054285] [2023-12-16 16:47:38,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:38,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:38,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:38,194 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:38,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 16:47:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:38,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 16:47:38,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:38,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:47:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:39,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:39,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366054285] [2023-12-16 16:47:39,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366054285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:47:39,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:47:39,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 16:47:39,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961339541] [2023-12-16 16:47:39,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:47:39,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 16:47:39,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:39,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 16:47:39,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:47:39,555 INFO L87 Difference]: Start difference. First operand 72 states and 93 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:44,070 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 [] [2023-12-16 16:47:48,097 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 [] [2023-12-16 16:47:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:48,625 INFO L93 Difference]: Finished difference Result 135 states and 176 transitions. [2023-12-16 16:47:48,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 16:47:48,627 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-16 16:47:48,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:48,628 INFO L225 Difference]: With dead ends: 135 [2023-12-16 16:47:48,628 INFO L226 Difference]: Without dead ends: 127 [2023-12-16 16:47:48,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:47:48,629 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:48,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 120 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 108 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2023-12-16 16:47:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-16 16:47:48,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 106. [2023-12-16 16:47:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.2891566265060241) internal successors, (107), 87 states have internal predecessors, (107), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 16:47:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 131 transitions. [2023-12-16 16:47:48,645 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 131 transitions. Word has length 13 [2023-12-16 16:47:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:48,645 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 131 transitions. [2023-12-16 16:47:48,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 131 transitions. [2023-12-16 16:47:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 16:47:48,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:48,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:48,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 16:47:48,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:48,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:48,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:48,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1008431016, now seen corresponding path program 1 times [2023-12-16 16:47:48,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:48,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588666280] [2023-12-16 16:47:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:48,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:48,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:48,850 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:48,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 16:47:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:48,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 16:47:48,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:48,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:48,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:47:48,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:48,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588666280] [2023-12-16 16:47:48,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588666280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:47:48,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:47:48,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 16:47:48,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302999849] [2023-12-16 16:47:48,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:47:48,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:47:48,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:48,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:47:48,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:47:48,919 INFO L87 Difference]: Start difference. First operand 106 states and 131 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:47:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:48,949 INFO L93 Difference]: Finished difference Result 136 states and 167 transitions. [2023-12-16 16:47:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:47:48,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-12-16 16:47:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:48,952 INFO L225 Difference]: With dead ends: 136 [2023-12-16 16:47:48,952 INFO L226 Difference]: Without dead ends: 75 [2023-12-16 16:47:48,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:47:48,953 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:48,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:47:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-16 16:47:48,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2023-12-16 16:47:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 62 states have internal predecessors, (77), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 16:47:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2023-12-16 16:47:48,962 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 19 [2023-12-16 16:47:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:48,962 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2023-12-16 16:47:48,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 16:47:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2023-12-16 16:47:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 16:47:48,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:48,963 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:48,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 16:47:49,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:49,164 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:49,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:49,165 INFO L85 PathProgramCache]: Analyzing trace with hash -617980160, now seen corresponding path program 1 times [2023-12-16 16:47:49,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:49,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373906030] [2023-12-16 16:47:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:49,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:49,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:49,166 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:49,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 16:47:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:49,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 16:47:49,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:49,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:47:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:49,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:49,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373906030] [2023-12-16 16:47:49,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373906030] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:47:49,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:47:49,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-16 16:47:49,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689786997] [2023-12-16 16:47:49,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:47:49,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 16:47:49,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:49,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 16:47:49,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:47:49,427 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:50,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:50,270 INFO L93 Difference]: Finished difference Result 151 states and 190 transitions. [2023-12-16 16:47:50,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 16:47:50,270 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-16 16:47:50,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:50,271 INFO L225 Difference]: With dead ends: 151 [2023-12-16 16:47:50,271 INFO L226 Difference]: Without dead ends: 137 [2023-12-16 16:47:50,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2023-12-16 16:47:50,272 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 206 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:50,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 256 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 16:47:50,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-16 16:47:50,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 88. [2023-12-16 16:47:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 76 states have internal predecessors, (94), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 16:47:50,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2023-12-16 16:47:50,288 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 21 [2023-12-16 16:47:50,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:50,288 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2023-12-16 16:47:50,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:50,289 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2023-12-16 16:47:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 16:47:50,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:50,289 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:50,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 16:47:50,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:50,493 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:50,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:50,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1938132741, now seen corresponding path program 2 times [2023-12-16 16:47:50,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:50,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654532352] [2023-12-16 16:47:50,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:47:50,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:50,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:50,495 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:50,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 16:47:50,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 16:47:50,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:47:50,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:47:50,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 16:47:50,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:47:50,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654532352] [2023-12-16 16:47:50,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654532352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:47:50,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:47:50,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 16:47:50,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780440268] [2023-12-16 16:47:50,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:47:50,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:47:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:47:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:47:50,627 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:50,738 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2023-12-16 16:47:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:47:50,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-16 16:47:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:50,741 INFO L225 Difference]: With dead ends: 121 [2023-12-16 16:47:50,741 INFO L226 Difference]: Without dead ends: 117 [2023-12-16 16:47:50,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:47:50,741 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:50,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 44 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:47:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-16 16:47:50,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 102. [2023-12-16 16:47:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 85 states have (on average 1.2588235294117647) internal successors, (107), 87 states have internal predecessors, (107), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 16:47:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2023-12-16 16:47:50,765 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 22 [2023-12-16 16:47:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:50,765 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2023-12-16 16:47:50,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:47:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2023-12-16 16:47:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 16:47:50,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:50,766 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:50,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 16:47:50,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:50,972 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:50,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:50,972 INFO L85 PathProgramCache]: Analyzing trace with hash 368537624, now seen corresponding path program 1 times [2023-12-16 16:47:50,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:50,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68185445] [2023-12-16 16:47:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:50,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:50,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:50,973 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:50,974 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 (12)] Waiting until timeout for monitored process [2023-12-16 16:47:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:51,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 16:47:51,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:51,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:47:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:53,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:53,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68185445] [2023-12-16 16:47:53,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68185445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:47:53,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:47:53,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2023-12-16 16:47:53,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550777030] [2023-12-16 16:47:53,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:47:53,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 16:47:53,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 16:47:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-12-16 16:47:53,434 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 16:47:56,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:47:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:58,373 INFO L93 Difference]: Finished difference Result 203 states and 250 transitions. [2023-12-16 16:47:58,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 16:47:58,378 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2023-12-16 16:47:58,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:58,379 INFO L225 Difference]: With dead ends: 203 [2023-12-16 16:47:58,379 INFO L226 Difference]: Without dead ends: 167 [2023-12-16 16:47:58,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-12-16 16:47:58,380 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:58,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 224 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 16:47:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-16 16:47:58,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 138. [2023-12-16 16:47:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 116 states have internal predecessors, (135), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-16 16:47:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2023-12-16 16:47:58,396 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 25 [2023-12-16 16:47:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:58,396 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2023-12-16 16:47:58,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 16:47:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2023-12-16 16:47:58,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 16:47:58,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:58,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-16 16:47:58,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 16:47:58,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:58,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:58,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash 334382651, now seen corresponding path program 2 times [2023-12-16 16:47:58,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:58,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47243389] [2023-12-16 16:47:58,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:47:58,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:58,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:58,602 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:58,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 16:47:58,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:47:58,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:47:58,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:47:58,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:47:58,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:47:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:47:58,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:58,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47243389] [2023-12-16 16:47:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47243389] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:47:58,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:47:58,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2023-12-16 16:47:58,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802683695] [2023-12-16 16:47:58,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:47:58,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 16:47:58,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:58,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 16:47:58,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:47:58,761 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 16:47:58,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:47:58,838 INFO L93 Difference]: Finished difference Result 188 states and 217 transitions. [2023-12-16 16:47:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:47:58,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2023-12-16 16:47:58,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:47:58,840 INFO L225 Difference]: With dead ends: 188 [2023-12-16 16:47:58,840 INFO L226 Difference]: Without dead ends: 100 [2023-12-16 16:47:58,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:47:58,841 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:47:58,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 103 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:47:58,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-16 16:47:58,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2023-12-16 16:47:58,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 85 states have internal predecessors, (98), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 16:47:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2023-12-16 16:47:58,854 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 31 [2023-12-16 16:47:58,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:47:58,854 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2023-12-16 16:47:58,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 16:47:58,854 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2023-12-16 16:47:58,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 16:47:58,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:47:58,857 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 16:47:58,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 16:47:59,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:59,060 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:47:59,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:47:59,061 INFO L85 PathProgramCache]: Analyzing trace with hash -539738185, now seen corresponding path program 1 times [2023-12-16 16:47:59,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:47:59,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786896586] [2023-12-16 16:47:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:47:59,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:47:59,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:47:59,062 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:47:59,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 16:47:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:47:59,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 16:47:59,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:47:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:47:59,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:47:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:47:59,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:47:59,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786896586] [2023-12-16 16:47:59,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786896586] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:47:59,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:47:59,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-16 16:47:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344458444] [2023-12-16 16:47:59,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:47:59,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 16:47:59,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:47:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 16:47:59,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-12-16 16:47:59,391 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 16:48:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:48:00,466 INFO L93 Difference]: Finished difference Result 312 states and 367 transitions. [2023-12-16 16:48:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-16 16:48:00,467 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2023-12-16 16:48:00,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:48:00,470 INFO L225 Difference]: With dead ends: 312 [2023-12-16 16:48:00,470 INFO L226 Difference]: Without dead ends: 305 [2023-12-16 16:48:00,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 16:48:00,471 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 339 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 16:48:00,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 472 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 16:48:00,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-16 16:48:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 278. [2023-12-16 16:48:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 218 states have (on average 1.2431192660550459) internal successors, (271), 227 states have internal predecessors, (271), 34 states have call successors, (34), 25 states have call predecessors, (34), 25 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-16 16:48:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 331 transitions. [2023-12-16 16:48:00,494 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 331 transitions. Word has length 37 [2023-12-16 16:48:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:48:00,495 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 331 transitions. [2023-12-16 16:48:00,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 16:48:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 331 transitions. [2023-12-16 16:48:00,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 16:48:00,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:48:00,498 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-16 16:48:00,513 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 (14)] Ended with exit code 0 [2023-12-16 16:48:00,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:48:00,702 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:48:00,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:48:00,702 INFO L85 PathProgramCache]: Analyzing trace with hash -537950725, now seen corresponding path program 3 times [2023-12-16 16:48:00,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:48:00,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151101244] [2023-12-16 16:48:00,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:48:00,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:48:00,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:48:00,704 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:48:00,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 16:48:02,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 16:48:02,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:48:02,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 16:48:02,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:48:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:48:03,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:48:34,480 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-16 16:48:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:48:34,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:48:34,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151101244] [2023-12-16 16:48:34,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151101244] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:48:34,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:48:34,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2023-12-16 16:48:34,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817559580] [2023-12-16 16:48:34,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:48:34,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 16:48:34,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:48:34,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 16:48:34,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-12-16 16:48:34,648 INFO L87 Difference]: Start difference. First operand 278 states and 331 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 22 states have internal predecessors, (55), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 16:48:48,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 16:48:51,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-16 16:48:52,036 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:48:52,040 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:48:53,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-16 16:48:53,236 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 [2023-12-16 16:48:53,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 16:48:53,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=144, Invalid=611, Unknown=1, NotChecked=0, Total=756 [2023-12-16 16:48:53,245 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 28 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-16 16:48:53,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 279 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-12-16 16:48:53,246 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:48:53,246 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-16 16:48:53,249 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:48:53,251 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:48:53,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:48:53 BoogieIcfgContainer [2023-12-16 16:48:53,252 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:48:53,252 INFO L158 Benchmark]: Toolchain (without parser) took 78446.58ms. Allocated memory is still 257.9MB. Free memory was 217.1MB in the beginning and 213.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.6MB. Max. memory is 8.0GB. [2023-12-16 16:48:53,252 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 187.7MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:48:53,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.68ms. Allocated memory is still 257.9MB. Free memory was 216.6MB in the beginning and 205.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 16:48:53,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.62ms. Allocated memory is still 257.9MB. Free memory was 205.6MB in the beginning and 204.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:48:53,253 INFO L158 Benchmark]: Boogie Preprocessor took 34.79ms. Allocated memory is still 257.9MB. Free memory was 204.0MB in the beginning and 201.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:48:53,253 INFO L158 Benchmark]: RCFGBuilder took 300.91ms. Allocated memory is still 257.9MB. Free memory was 201.9MB in the beginning and 189.8MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 16:48:53,253 INFO L158 Benchmark]: TraceAbstraction took 77886.78ms. Allocated memory is still 257.9MB. Free memory was 189.3MB in the beginning and 213.6MB in the end (delta: -24.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:48:53,254 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 187.7MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 191.68ms. Allocated memory is still 257.9MB. Free memory was 216.6MB in the beginning and 205.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.62ms. Allocated memory is still 257.9MB. Free memory was 205.6MB in the beginning and 204.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.79ms. Allocated memory is still 257.9MB. Free memory was 204.0MB in the beginning and 201.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 300.91ms. Allocated memory is still 257.9MB. Free memory was 201.9MB in the beginning and 189.8MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 77886.78ms. Allocated memory is still 257.9MB. Free memory was 189.3MB in the beginning and 213.6MB in the end (delta: -24.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77.8s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 35.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 836 SdHoareTripleChecker+Valid, 22.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 823 mSDsluCounter, 1953 SdHoareTripleChecker+Invalid, 22.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1641 mSDsCounter, 287 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1205 IncrementalHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 287 mSolverCounterUnsat, 312 mSDtfsCounter, 1205 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 493 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 27.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=278occurred in iteration=13, InterpolantAutomatonStates: 134, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 165 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 36.9s InterpolantComputationTime, 266 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 433 ConstructedInterpolants, 19 QuantifiedInterpolants, 3359 SizeOfPredicates, 24 NumberOfNonLiveVariables, 587 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 22 InterpolantComputations, 6 PerfectInterpolantSequences, 128/319 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