/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/array-industry-pattern/array_range_init.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 17:08:38,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 17:08:38,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 17:08:38,611 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 17:08:38,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 17:08:38,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 17:08:38,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 17:08:38,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 17:08:38,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 17:08:38,635 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 17:08:38,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 17:08:38,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 17:08:38,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 17:08:38,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 17:08:38,637 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 17:08:38,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 17:08:38,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 17:08:38,638 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 17:08:38,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 17:08:38,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 17:08:38,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 17:08:38,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 17:08:38,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 17:08:38,641 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 17:08:38,641 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 17:08:38,641 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 17:08:38,642 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 17:08:38,642 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 17:08:38,642 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 17:08:38,643 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 17:08:38,643 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 17:08:38,643 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 17:08:38,644 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 17:08:38,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 17:08:38,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:08:38,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 17:08:38,645 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 17:08:38,645 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 17:08:38,646 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 17:08:38,646 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 17:08:38,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 17:08:38,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 17:08:38,651 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 17:08:38,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 17:08:38,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 17:08:38,651 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 17:08:38,651 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 17:08:38,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 17:08:38,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 17:08:38,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 17:08:38,930 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 17:08:38,931 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 17:08:38,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_range_init.i [2023-12-21 17:08:40,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 17:08:40,259 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 17:08:40,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_range_init.i [2023-12-21 17:08:40,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25669bb8d/318066b022c744b6b9d06861f068db76/FLAGc5bb8016b [2023-12-21 17:08:40,276 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25669bb8d/318066b022c744b6b9d06861f068db76 [2023-12-21 17:08:40,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 17:08:40,280 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 17:08:40,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 17:08:40,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 17:08:40,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 17:08:40,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a50b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40, skipping insertion in model container [2023-12-21 17:08:40,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 17:08:40,424 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_range_init.i[809,822] [2023-12-21 17:08:40,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:08:40,447 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 17:08:40,458 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_range_init.i[809,822] [2023-12-21 17:08:40,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:08:40,474 INFO L206 MainTranslator]: Completed translation [2023-12-21 17:08:40,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40 WrapperNode [2023-12-21 17:08:40,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 17:08:40,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 17:08:40,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 17:08:40,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 17:08:40,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,491 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,514 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2023-12-21 17:08:40,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 17:08:40,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 17:08:40,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 17:08:40,516 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 17:08:40,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,546 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-21 17:08:40,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,553 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,554 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,555 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 17:08:40,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 17:08:40,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 17:08:40,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 17:08:40,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (1/1) ... [2023-12-21 17:08:40,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:08:40,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 17:08:40,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 17:08:40,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 17:08:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 17:08:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 17:08:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 17:08:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 17:08:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 17:08:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 17:08:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 17:08:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 17:08:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 17:08:40,686 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 17:08:40,687 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 17:08:40,846 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 17:08:40,880 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 17:08:40,880 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 17:08:40,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:08:40 BoogieIcfgContainer [2023-12-21 17:08:40,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 17:08:40,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 17:08:40,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 17:08:40,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 17:08:40,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:08:40" (1/3) ... [2023-12-21 17:08:40,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c3ccc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:08:40, skipping insertion in model container [2023-12-21 17:08:40,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:40" (2/3) ... [2023-12-21 17:08:40,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c3ccc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:08:40, skipping insertion in model container [2023-12-21 17:08:40,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:08:40" (3/3) ... [2023-12-21 17:08:40,888 INFO L112 eAbstractionObserver]: Analyzing ICFG array_range_init.i [2023-12-21 17:08:40,903 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 17:08:40,903 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 17:08:40,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 17:08:40,948 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;@17b3d68c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 17:08:40,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 17:08:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:40,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-21 17:08:40,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:08:40,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-21 17:08:40,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:08:40,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:08:40,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1929175509, now seen corresponding path program 1 times [2023-12-21 17:08:40,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:08:40,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350156886] [2023-12-21 17:08:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:08:40,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:40,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:08:40,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:08:41,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 17:08:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:08:41,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 17:08:41,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:08:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:08:41,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:08:41,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:08:41,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350156886] [2023-12-21 17:08:41,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350156886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:08:41,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:08:41,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 17:08:41,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549304282] [2023-12-21 17:08:41,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:08:41,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 17:08:41,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:08:41,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 17:08:41,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 17:08:41,126 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:08:41,152 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2023-12-21 17:08:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 17:08:41,155 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-21 17:08:41,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:08:41,159 INFO L225 Difference]: With dead ends: 20 [2023-12-21 17:08:41,160 INFO L226 Difference]: Without dead ends: 10 [2023-12-21 17:08:41,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 17:08:41,164 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:08:41,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:08:41,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-21 17:08:41,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-21 17:08:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-12-21 17:08:41,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2023-12-21 17:08:41,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:08:41,190 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-12-21 17:08:41,190 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:41,190 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-21 17:08:41,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-21 17:08:41,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:08:41,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-21 17:08:41,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 17:08:41,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:41,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:08:41,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:08:41,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1939334240, now seen corresponding path program 1 times [2023-12-21 17:08:41,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:08:41,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372903365] [2023-12-21 17:08:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:08:41,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:41,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:08:41,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:08:41,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 17:08:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:08:41,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 17:08:41,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:08:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:08:41,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:08:41,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:08:41,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372903365] [2023-12-21 17:08:41,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372903365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:08:41,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:08:41,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 17:08:41,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435952734] [2023-12-21 17:08:41,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:08:41,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 17:08:41,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:08:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 17:08:41,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 17:08:41,461 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:41,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:08:41,490 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2023-12-21 17:08:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 17:08:41,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-21 17:08:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:08:41,491 INFO L225 Difference]: With dead ends: 27 [2023-12-21 17:08:41,491 INFO L226 Difference]: Without dead ends: 18 [2023-12-21 17:08:41,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 17:08:41,492 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:08:41,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 9 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:08:41,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-21 17:08:41,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2023-12-21 17:08:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:41,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-21 17:08:41,498 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2023-12-21 17:08:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:08:41,498 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-21 17:08:41,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:41,499 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-21 17:08:41,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 17:08:41,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:08:41,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:08:41,505 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 (3)] Ended with exit code 0 [2023-12-21 17:08:41,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:41,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:08:41,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:08:41,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1508207766, now seen corresponding path program 1 times [2023-12-21 17:08:41,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:08:41,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933234371] [2023-12-21 17:08:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:08:41,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:41,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:08:41,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:08:41,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 17:08:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:08:41,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 17:08:41,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:08:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:08:41,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:08:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:08:41,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:08:41,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933234371] [2023-12-21 17:08:41,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933234371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:08:41,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:08:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 17:08:41,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408632174] [2023-12-21 17:08:41,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:08:41,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 17:08:41,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:08:41,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 17:08:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 17:08:41,836 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:41,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:08:41,958 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-12-21 17:08:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 17:08:41,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-21 17:08:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:08:41,961 INFO L225 Difference]: With dead ends: 45 [2023-12-21 17:08:41,961 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 17:08:41,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 17:08:41,964 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:08:41,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 17 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:08:41,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 17:08:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2023-12-21 17:08:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:41,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-12-21 17:08:41,972 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2023-12-21 17:08:41,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:08:41,973 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-12-21 17:08:41,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:41,973 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-12-21 17:08:41,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 17:08:41,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:08:41,974 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:08:41,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 17:08:42,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:42,176 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:08:42,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:08:42,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1383074466, now seen corresponding path program 1 times [2023-12-21 17:08:42,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:08:42,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651349512] [2023-12-21 17:08:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:08:42,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:42,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:08:42,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:08:42,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 17:08:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:08:42,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 17:08:42,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:08:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:08:42,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:08:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:08:42,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:08:42,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651349512] [2023-12-21 17:08:42,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651349512] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:08:42,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:08:42,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-21 17:08:42,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335984761] [2023-12-21 17:08:42,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:08:42,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 17:08:42,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:08:42,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 17:08:42,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-21 17:08:42,486 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:08:42,729 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2023-12-21 17:08:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 17:08:42,731 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-21 17:08:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:08:42,732 INFO L225 Difference]: With dead ends: 86 [2023-12-21 17:08:42,732 INFO L226 Difference]: Without dead ends: 75 [2023-12-21 17:08:42,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-12-21 17:08:42,733 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 102 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:08:42,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 63 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:08:42,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-21 17:08:42,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 35. [2023-12-21 17:08:42,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-12-21 17:08:42,740 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2023-12-21 17:08:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:08:42,740 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-12-21 17:08:42,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-12-21 17:08:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 17:08:42,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:08:42,741 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:08:42,753 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 [2023-12-21 17:08:42,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:42,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:08:42,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:08:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1605505560, now seen corresponding path program 2 times [2023-12-21 17:08:42,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:08:42,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185039048] [2023-12-21 17:08:42,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:08:42,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:42,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:08:42,947 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:08:42,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 17:08:42,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:08:42,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:08:43,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 17:08:43,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:08:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:08:43,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:08:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:08:43,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:08:43,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185039048] [2023-12-21 17:08:43,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185039048] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:08:43,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:08:43,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-21 17:08:43,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840179120] [2023-12-21 17:08:43,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:08:43,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 17:08:43,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:08:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 17:08:43,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-12-21 17:08:43,491 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:44,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:08:44,604 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2023-12-21 17:08:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 17:08:44,605 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-21 17:08:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:08:44,606 INFO L225 Difference]: With dead ends: 166 [2023-12-21 17:08:44,606 INFO L226 Difference]: Without dead ends: 155 [2023-12-21 17:08:44,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=478, Unknown=0, NotChecked=0, Total=756 [2023-12-21 17:08:44,608 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 422 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:08:44,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 273 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 17:08:44,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-21 17:08:44,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 65. [2023-12-21 17:08:44,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2023-12-21 17:08:44,618 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 33 [2023-12-21 17:08:44,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:08:44,619 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2023-12-21 17:08:44,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:44,619 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2023-12-21 17:08:44,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 17:08:44,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:08:44,620 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:08:44,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 17:08:44,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:44,823 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:08:44,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:08:44,824 INFO L85 PathProgramCache]: Analyzing trace with hash -888830760, now seen corresponding path program 3 times [2023-12-21 17:08:44,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:08:44,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031084747] [2023-12-21 17:08:44,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:08:44,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:44,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:08:44,826 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:08:44,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 17:08:44,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 17:08:44,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:08:44,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 17:08:44,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:08:44,976 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2023-12-21 17:08:44,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:08:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-21 17:08:45,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:08:45,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031084747] [2023-12-21 17:08:45,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031084747] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:08:45,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:08:45,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2023-12-21 17:08:45,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472828556] [2023-12-21 17:08:45,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:08:45,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 17:08:45,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:08:45,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 17:08:45,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 17:08:45,017 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:45,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:08:45,276 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2023-12-21 17:08:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 17:08:45,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 17:08:45,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:08:45,278 INFO L225 Difference]: With dead ends: 113 [2023-12-21 17:08:45,279 INFO L226 Difference]: Without dead ends: 107 [2023-12-21 17:08:45,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-12-21 17:08:45,280 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 89 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:08:45,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 35 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 17:08:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-21 17:08:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2023-12-21 17:08:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 76 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2023-12-21 17:08:45,290 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 63 [2023-12-21 17:08:45,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:08:45,290 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2023-12-21 17:08:45,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2023-12-21 17:08:45,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 17:08:45,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:08:45,292 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 18, 5, 1, 1, 1, 1, 1, 1] [2023-12-21 17:08:45,299 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 (7)] Forceful destruction successful, exit code 0 [2023-12-21 17:08:45,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:45,495 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:08:45,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:08:45,496 INFO L85 PathProgramCache]: Analyzing trace with hash 10357464, now seen corresponding path program 4 times [2023-12-21 17:08:45,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:08:45,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029549129] [2023-12-21 17:08:45,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:08:45,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:45,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:08:45,498 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:08:45,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 17:08:45,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:08:45,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:08:45,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 17:08:45,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:08:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 261 proven. 495 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 17:08:45,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:08:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 261 proven. 495 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 17:08:46,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:08:46,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029549129] [2023-12-21 17:08:46,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029549129] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:08:46,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:08:46,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-12-21 17:08:46,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623505778] [2023-12-21 17:08:46,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:08:46,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 17:08:46,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:08:46,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 17:08:46,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1122, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 17:08:46,980 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 40 states, 40 states have (on average 3.05) internal successors, (122), 39 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:51,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:08:51,975 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2023-12-21 17:08:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 17:08:51,976 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 39 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-21 17:08:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:08:51,979 INFO L225 Difference]: With dead ends: 350 [2023-12-21 17:08:51,979 INFO L226 Difference]: Without dead ends: 327 [2023-12-21 17:08:51,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1158, Invalid=2148, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 17:08:51,981 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 1557 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:08:51,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 1143 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 17:08:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-21 17:08:52,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 137. [2023-12-21 17:08:52,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0514705882352942) internal successors, (143), 136 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:52,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 143 transitions. [2023-12-21 17:08:52,011 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 143 transitions. Word has length 75 [2023-12-21 17:08:52,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:08:52,011 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 143 transitions. [2023-12-21 17:08:52,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 39 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:08:52,012 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 143 transitions. [2023-12-21 17:08:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 17:08:52,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:08:52,017 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 38, 5, 1, 1, 1, 1, 1, 1] [2023-12-21 17:08:52,023 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 [2023-12-21 17:08:52,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:52,218 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:08:52,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:08:52,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1900756904, now seen corresponding path program 5 times [2023-12-21 17:08:52,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:08:52,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341777023] [2023-12-21 17:08:52,219 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:08:52,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:52,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:08:52,220 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:08:52,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 17:08:52,632 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 44 check-sat command(s) [2023-12-21 17:08:52,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:08:52,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 17:08:52,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:08:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 541 proven. 2185 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 17:08:53,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:09:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 541 proven. 2185 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 17:09:02,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:09:02,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341777023] [2023-12-21 17:09:02,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341777023] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:09:02,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:09:02,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 64] total 103 [2023-12-21 17:09:02,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857600043] [2023-12-21 17:09:02,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:09:02,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-12-21 17:09:02,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:09:02,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-12-21 17:09:02,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2686, Invalid=8026, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 17:09:02,522 INFO L87 Difference]: Start difference. First operand 137 states and 143 transitions. Second operand has 104 states, 104 states have (on average 2.326923076923077) internal successors, (242), 103 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 17:23:03,026 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 17:23:03,050 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 17:23:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 564 states. [2023-12-21 17:23:03,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 624 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126226 ImplicationChecksByTransitivity, 830.4s TimeCoverageRelationStatistics Valid=78288, Invalid=312962, Unknown=0, NotChecked=0, Total=391250 [2023-12-21 17:23:03,101 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 2730 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 11374 mSolverCounterSat, 1366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 12740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1366 IncrementalHoareTripleChecker+Valid, 11374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:23:03,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 1874 Invalid, 12740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1366 Valid, 11374 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-12-21 17:23:03,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 17:23:03,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 17:23:03,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:23:03,306 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (137states) and FLOYD_HOARE automaton (currently 564 states, 104 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 626 known predicates. [2023-12-21 17:23:03,310 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2023-12-21 17:23:03,312 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 17:23:03,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:23:03 BoogieIcfgContainer [2023-12-21 17:23:03,314 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 17:23:03,315 INFO L158 Benchmark]: Toolchain (without parser) took 863035.01ms. Allocated memory was 183.5MB in the beginning and 260.0MB in the end (delta: 76.5MB). Free memory was 136.9MB in the beginning and 39.7MB in the end (delta: 97.2MB). Peak memory consumption was 174.1MB. Max. memory is 8.0GB. [2023-12-21 17:23:03,315 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 183.5MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 17:23:03,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.33ms. Allocated memory is still 183.5MB. Free memory was 136.6MB in the beginning and 125.4MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 17:23:03,315 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.93ms. Allocated memory is still 183.5MB. Free memory was 125.4MB in the beginning and 124.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 17:23:03,315 INFO L158 Benchmark]: Boogie Preprocessor took 47.15ms. Allocated memory is still 183.5MB. Free memory was 124.0MB in the beginning and 121.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 17:23:03,321 INFO L158 Benchmark]: RCFGBuilder took 317.39ms. Allocated memory is still 183.5MB. Free memory was 121.9MB in the beginning and 110.0MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 17:23:03,322 INFO L158 Benchmark]: TraceAbstraction took 862431.44ms. Allocated memory was 183.5MB in the beginning and 260.0MB in the end (delta: 76.5MB). Free memory was 109.4MB in the beginning and 39.7MB in the end (delta: 69.6MB). Peak memory consumption was 146.8MB. Max. memory is 8.0GB. [2023-12-21 17:23:03,324 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 183.5MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.33ms. Allocated memory is still 183.5MB. Free memory was 136.6MB in the beginning and 125.4MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.93ms. Allocated memory is still 183.5MB. Free memory was 125.4MB in the beginning and 124.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.15ms. Allocated memory is still 183.5MB. Free memory was 124.0MB in the beginning and 121.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 317.39ms. Allocated memory is still 183.5MB. Free memory was 121.9MB in the beginning and 110.0MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 862431.44ms. Allocated memory was 183.5MB in the beginning and 260.0MB in the end (delta: 76.5MB). Free memory was 109.4MB in the beginning and 39.7MB in the end (delta: 69.6MB). Peak memory consumption was 146.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (137states) and FLOYD_HOARE automaton (currently 564 states, 104 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 626 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 862.4s, OverallIterations: 8, TraceHistogramMax: 43, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 847.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4939 SdHoareTripleChecker+Valid, 14.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4939 mSDsluCounter, 3425 SdHoareTripleChecker+Invalid, 12.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3234 mSDsCounter, 1922 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14075 IncrementalHoareTripleChecker+Invalid, 15997 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1922 mSolverCounterUnsat, 191 mSDtfsCounter, 14075 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1225 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 734 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126430 ImplicationChecksByTransitivity, 836.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=7, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 372 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 345 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 664 ConstructedInterpolants, 0 QuantifiedInterpolants, 4061 SizeOfPredicates, 1 NumberOfNonLiveVariables, 768 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 2816/8412 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