/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-programs/partial_mod_count_limited_gen.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 18:10:00,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 18:10:00,252 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 18:10:00,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 18:10:00,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 18:10:00,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 18:10:00,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 18:10:00,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 18:10:00,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 18:10:00,283 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 18:10:00,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 18:10:00,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 18:10:00,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 18:10:00,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 18:10:00,291 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 18:10:00,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 18:10:00,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 18:10:00,293 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 18:10:00,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 18:10:00,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 18:10:00,293 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 18:10:00,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 18:10:00,294 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 18:10:00,294 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 18:10:00,294 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 18:10:00,294 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 18:10:00,294 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 18:10:00,294 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 18:10:00,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 18:10:00,295 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 18:10:00,295 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 18:10:00,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 18:10:00,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 18:10:00,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 18:10:00,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:10:00,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 18:10:00,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 18:10:00,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 18:10:00,296 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 18:10:00,296 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 18:10:00,297 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 18:10:00,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 18:10:00,297 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 18:10:00,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 18:10:00,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 18:10:00,297 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 18:10:00,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 18:10:00,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 18:10:00,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 18:10:00,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 18:10:00,507 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 18:10:00,507 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 18:10:00,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_limited_gen.c [2023-12-21 18:10:01,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 18:10:01,721 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 18:10:01,722 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_gen.c [2023-12-21 18:10:01,729 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/277033c98/f6eaf6489f454ef1aa0b6d7dd89b0340/FLAGe361ac68a [2023-12-21 18:10:01,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/277033c98/f6eaf6489f454ef1aa0b6d7dd89b0340 [2023-12-21 18:10:01,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 18:10:01,749 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 18:10:01,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 18:10:01,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 18:10:01,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 18:10:01,758 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:01,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f48fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01, skipping insertion in model container [2023-12-21 18:10:01,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:01,777 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 18:10:01,900 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-programs/partial_mod_count_limited_gen.c[333,346] [2023-12-21 18:10:01,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:10:01,936 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 18:10:01,945 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-programs/partial_mod_count_limited_gen.c[333,346] [2023-12-21 18:10:01,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 18:10:01,968 INFO L206 MainTranslator]: Completed translation [2023-12-21 18:10:01,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01 WrapperNode [2023-12-21 18:10:01,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 18:10:01,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 18:10:01,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 18:10:01,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 18:10:01,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:01,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:01,999 INFO L138 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-12-21 18:10:01,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 18:10:02,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 18:10:02,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 18:10:02,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 18:10:02,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:02,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:02,011 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:02,039 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 2 writes are split as follows [0, 2]. [2023-12-21 18:10:02,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:02,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:02,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:02,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:02,050 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:02,051 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:02,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 18:10:02,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 18:10:02,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 18:10:02,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 18:10:02,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (1/1) ... [2023-12-21 18:10:02,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 18:10:02,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 18:10:02,093 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 18:10:02,117 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 18:10:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 18:10:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 18:10:02,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 18:10:02,128 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 18:10:02,128 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 18:10:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 18:10:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 18:10:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 18:10:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 18:10:02,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 18:10:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 18:10:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 18:10:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 18:10:02,224 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 18:10:02,226 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 18:10:02,681 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 18:10:02,705 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 18:10:02,706 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 18:10:02,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:10:02 BoogieIcfgContainer [2023-12-21 18:10:02,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 18:10:02,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 18:10:02,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 18:10:02,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 18:10:02,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:10:01" (1/3) ... [2023-12-21 18:10:02,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4f1d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:10:02, skipping insertion in model container [2023-12-21 18:10:02,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:10:01" (2/3) ... [2023-12-21 18:10:02,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4f1d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:10:02, skipping insertion in model container [2023-12-21 18:10:02,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:10:02" (3/3) ... [2023-12-21 18:10:02,714 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_gen.c [2023-12-21 18:10:02,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 18:10:02,731 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 18:10:02,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 18:10:02,779 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;@13e4a20d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 18:10:02,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 18:10:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:10:02,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 18:10:02,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:10:02,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:10:02,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:10:02,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:10:02,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1196437446, now seen corresponding path program 1 times [2023-12-21 18:10:02,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:10:02,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605545326] [2023-12-21 18:10:02,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:10:02,808 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 18:10:02,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:10:02,810 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 18:10:02,811 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 18:10:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:10:02,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 18:10:02,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:10:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 18:10:02,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:10:02,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:10:02,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605545326] [2023-12-21 18:10:02,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605545326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:10:02,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:10:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 18:10:02,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051032399] [2023-12-21 18:10:02,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:10:03,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 18:10:03,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:10:03,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 18:10:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 18:10:03,052 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:10:03,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:10:03,091 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2023-12-21 18:10:03,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 18:10:03,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-21 18:10:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:10:03,098 INFO L225 Difference]: With dead ends: 44 [2023-12-21 18:10:03,099 INFO L226 Difference]: Without dead ends: 21 [2023-12-21 18:10:03,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 18:10:03,107 INFO L413 NwaCegarLoop]: 25 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, 25 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 18:10:03,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 18:10:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-21 18:10:03,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-21 18:10:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:10:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-12-21 18:10:03,153 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 19 [2023-12-21 18:10:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:10:03,154 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-12-21 18:10:03,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:10:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-21 18:10:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 18:10:03,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:10:03,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:10:03,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 18:10:03,358 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 18:10:03,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:10:03,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:10:03,359 INFO L85 PathProgramCache]: Analyzing trace with hash 876433670, now seen corresponding path program 1 times [2023-12-21 18:10:03,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:10:03,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247308893] [2023-12-21 18:10:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:10:03,360 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 18:10:03,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:10:03,363 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 18:10:03,412 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 18:10:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:10:03,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 18:10:03,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:10:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:10:03,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:10:03,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:10:03,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247308893] [2023-12-21 18:10:03,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247308893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:10:03,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:10:03,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 18:10:03,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054961035] [2023-12-21 18:10:03,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:10:03,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 18:10:03,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:10:03,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 18:10:03,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 18:10:03,599 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:10:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:10:04,144 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2023-12-21 18:10:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 18:10:04,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-21 18:10:04,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:10:04,157 INFO L225 Difference]: With dead ends: 46 [2023-12-21 18:10:04,157 INFO L226 Difference]: Without dead ends: 33 [2023-12-21 18:10:04,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 18:10:04,159 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:10:04,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 25 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 18:10:04,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-21 18:10:04,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2023-12-21 18:10:04,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:10:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-12-21 18:10:04,166 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 19 [2023-12-21 18:10:04,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:10:04,167 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-12-21 18:10:04,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:10:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-12-21 18:10:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 18:10:04,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:10:04,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:10:04,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 18:10:04,376 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 18:10:04,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:10:04,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:10:04,377 INFO L85 PathProgramCache]: Analyzing trace with hash -635549255, now seen corresponding path program 1 times [2023-12-21 18:10:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:10:04,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498620060] [2023-12-21 18:10:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:10:04,378 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 18:10:04,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:10:04,380 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 18:10:04,387 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 18:10:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:10:04,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 18:10:04,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:10:04,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 18:10:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:10:04,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 18:10:04,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:10:04,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498620060] [2023-12-21 18:10:04,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498620060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 18:10:04,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 18:10:04,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 18:10:04,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991625250] [2023-12-21 18:10:04,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 18:10:04,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 18:10:04,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:10:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 18:10:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 18:10:04,673 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:10:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:10:04,842 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2023-12-21 18:10:04,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 18:10:04,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-12-21 18:10:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:10:04,846 INFO L225 Difference]: With dead ends: 46 [2023-12-21 18:10:04,846 INFO L226 Difference]: Without dead ends: 33 [2023-12-21 18:10:04,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 18:10:04,847 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 18:10:04,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 65 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 18:10:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-21 18:10:04,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2023-12-21 18:10:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:10:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-12-21 18:10:04,852 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 24 [2023-12-21 18:10:04,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:10:04,852 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-12-21 18:10:04,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:10:04,852 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-12-21 18:10:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 18:10:04,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:10:04,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:10:04,874 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 18:10:05,054 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 18:10:05,054 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:10:05,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:10:05,055 INFO L85 PathProgramCache]: Analyzing trace with hash 44509115, now seen corresponding path program 1 times [2023-12-21 18:10:05,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:10:05,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808741865] [2023-12-21 18:10:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:10:05,055 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 18:10:05,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:10:05,056 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 18:10:05,079 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 18:10:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:10:05,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 18:10:05,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:10:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:10:05,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:10:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 18:10:05,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:10:05,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808741865] [2023-12-21 18:10:05,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808741865] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:10:05,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:10:05,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-12-21 18:10:05,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060602886] [2023-12-21 18:10:05,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:10:05,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 18:10:05,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:10:05,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 18:10:05,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 18:10:05,335 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:10:06,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:10:06,013 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2023-12-21 18:10:06,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 18:10:06,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-12-21 18:10:06,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:10:06,015 INFO L225 Difference]: With dead ends: 67 [2023-12-21 18:10:06,015 INFO L226 Difference]: Without dead ends: 59 [2023-12-21 18:10:06,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-21 18:10:06,016 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 124 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 18:10:06,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 48 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 18:10:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-21 18:10:06,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2023-12-21 18:10:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:10:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2023-12-21 18:10:06,020 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 24 [2023-12-21 18:10:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:10:06,021 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2023-12-21 18:10:06,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:10:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2023-12-21 18:10:06,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 18:10:06,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:10:06,022 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:10:06,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 18:10:06,228 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 18:10:06,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:10:06,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:10:06,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1838024126, now seen corresponding path program 1 times [2023-12-21 18:10:06,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:10:06,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323753835] [2023-12-21 18:10:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:10:06,229 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 18:10:06,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:10:06,233 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 18:10:06,235 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 18:10:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:10:06,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 18:10:06,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:10:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 18:10:08,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:10:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 18:10:10,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:10:10,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323753835] [2023-12-21 18:10:10,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323753835] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:10:10,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:10:10,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 18:10:10,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792238235] [2023-12-21 18:10:10,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:10:10,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 18:10:10,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:10:10,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 18:10:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-21 18:10:10,133 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:10:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:10:13,225 INFO L93 Difference]: Finished difference Result 80 states and 99 transitions. [2023-12-21 18:10:13,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 18:10:13,243 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2023-12-21 18:10:13,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:10:13,246 INFO L225 Difference]: With dead ends: 80 [2023-12-21 18:10:13,246 INFO L226 Difference]: Without dead ends: 58 [2023-12-21 18:10:13,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-21 18:10:13,247 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 148 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 18:10:13,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 100 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 18:10:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-21 18:10:13,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 37. [2023-12-21 18:10:13,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:10:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-12-21 18:10:13,252 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 39 [2023-12-21 18:10:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:10:13,252 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-12-21 18:10:13,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 18:10:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-12-21 18:10:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 18:10:13,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:10:13,253 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:10:13,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 18:10:13,466 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 18:10:13,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:10:13,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:10:13,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1858576642, now seen corresponding path program 2 times [2023-12-21 18:10:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:10:13,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959565282] [2023-12-21 18:10:13,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:10:13,467 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 18:10:13,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:10:13,469 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 18:10:13,470 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 18:10:13,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:10:13,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:10:13,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 18:10:13,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:10:13,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 18:10:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 18:10:13,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:10:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 18:10:13,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:10:13,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959565282] [2023-12-21 18:10:13,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959565282] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:10:13,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:10:13,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-21 18:10:13,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974845567] [2023-12-21 18:10:13,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:10:13,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 18:10:13,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:10:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 18:10:13,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-21 18:10:13,879 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:10:14,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:10:14,467 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2023-12-21 18:10:14,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 18:10:14,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2023-12-21 18:10:14,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:10:14,468 INFO L225 Difference]: With dead ends: 92 [2023-12-21 18:10:14,468 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 18:10:14,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-12-21 18:10:14,469 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 18:10:14,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 136 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 18:10:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 18:10:14,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 40. [2023-12-21 18:10:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:10:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2023-12-21 18:10:14,475 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 39 [2023-12-21 18:10:14,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:10:14,475 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2023-12-21 18:10:14,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:10:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2023-12-21 18:10:14,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 18:10:14,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:10:14,476 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:10:14,496 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 18:10:14,676 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 18:10:14,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:10:14,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:10:14,677 INFO L85 PathProgramCache]: Analyzing trace with hash -841484350, now seen corresponding path program 3 times [2023-12-21 18:10:14,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:10:14,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818823611] [2023-12-21 18:10:14,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:10:14,678 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 18:10:14,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:10:14,679 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 18:10:14,683 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 18:10:14,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 18:10:14,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:10:14,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 18:10:14,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:10:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 18:10:15,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:10:34,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:10:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818823611] [2023-12-21 18:10:34,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818823611] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 18:10:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [347574785] [2023-12-21 18:10:34,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:10:34,155 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 18:10:34,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 18:10:34,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 18:10:34,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-21 18:10:34,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 18:10:34,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:10:34,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 18:10:34,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:10:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 18:10:35,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:10:45,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [347574785] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 18:10:45,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:10:45,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-21 18:10:45,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249030385] [2023-12-21 18:10:45,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:10:45,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 18:10:45,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:10:45,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 18:10:45,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-21 18:10:45,920 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:10:47,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:10:47,702 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2023-12-21 18:10:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 18:10:47,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-21 18:10:47,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:10:47,703 INFO L225 Difference]: With dead ends: 52 [2023-12-21 18:10:47,703 INFO L226 Difference]: Without dead ends: 50 [2023-12-21 18:10:47,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:10:47,704 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 18:10:47,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 67 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 18:10:47,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-21 18:10:47,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-12-21 18:10:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:10:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-12-21 18:10:47,709 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 39 [2023-12-21 18:10:47,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:10:47,709 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-12-21 18:10:47,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:10:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-12-21 18:10:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 18:10:47,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:10:47,710 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:10:47,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-21 18:10:47,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-21 18:10:48,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:10:48,120 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:10:48,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:10:48,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1182825330, now seen corresponding path program 1 times [2023-12-21 18:10:48,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:10:48,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817312533] [2023-12-21 18:10:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 18:10:48,121 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 18:10:48,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:10:48,123 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:10:48,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 18:10:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 18:10:48,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 18:10:48,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:10:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 18:10:48,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:10:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 18:10:48,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:10:48,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817312533] [2023-12-21 18:10:48,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817312533] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:10:48,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:10:48,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-21 18:10:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605862322] [2023-12-21 18:10:48,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:10:48,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 18:10:48,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:10:48,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 18:10:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-12-21 18:10:48,780 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:10:52,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:10:52,310 INFO L93 Difference]: Finished difference Result 242 states and 294 transitions. [2023-12-21 18:10:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 18:10:52,311 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2023-12-21 18:10:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:10:52,312 INFO L225 Difference]: With dead ends: 242 [2023-12-21 18:10:52,312 INFO L226 Difference]: Without dead ends: 224 [2023-12-21 18:10:52,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-12-21 18:10:52,313 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 503 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-21 18:10:52,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 201 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-21 18:10:52,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-21 18:10:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 79. [2023-12-21 18:10:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 75 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:10:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2023-12-21 18:10:52,323 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 44 [2023-12-21 18:10:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:10:52,324 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2023-12-21 18:10:52,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 18:10:52,324 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2023-12-21 18:10:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 18:10:52,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:10:52,328 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:10:52,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 18:10:52,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:10:52,537 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:10:52,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:10:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash -311227246, now seen corresponding path program 2 times [2023-12-21 18:10:52,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:10:52,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22203936] [2023-12-21 18:10:52,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:10:52,538 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 18:10:52,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:10:52,539 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:10:52,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 18:10:52,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:10:52,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:10:53,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 18:10:53,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:11:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 130 proven. 38 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-21 18:11:00,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:11:09,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:11:09,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22203936] [2023-12-21 18:11:09,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22203936] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 18:11:09,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [807821876] [2023-12-21 18:11:09,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 18:11:09,891 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 18:11:09,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 18:11:09,893 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 18:11:09,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-21 18:11:10,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 18:11:10,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:11:10,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 18:11:10,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:11:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 18:11:16,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:11:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 18:11:25,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [807821876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:11:25,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 18:11:25,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 36 [2023-12-21 18:11:25,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520880845] [2023-12-21 18:11:25,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 18:11:25,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-21 18:11:25,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:11:25,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-21 18:11:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=1684, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 18:11:25,369 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 36 states, 35 states have (on average 4.371428571428571) internal successors, (153), 35 states have internal predecessors, (153), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 18:15:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:15:27,588 INFO L93 Difference]: Finished difference Result 1907 states and 2371 transitions. [2023-12-21 18:15:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-21 18:15:27,589 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.371428571428571) internal successors, (153), 35 states have internal predecessors, (153), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 74 [2023-12-21 18:15:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:15:27,594 INFO L225 Difference]: With dead ends: 1907 [2023-12-21 18:15:27,594 INFO L226 Difference]: Without dead ends: 1860 [2023-12-21 18:15:27,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4531 ImplicationChecksByTransitivity, 188.6s TimeCoverageRelationStatistics Valid=3488, Invalid=12768, Unknown=0, NotChecked=0, Total=16256 [2023-12-21 18:15:27,599 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 2513 mSDsluCounter, 3648 mSDsCounter, 0 mSdLazyCounter, 4883 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 5034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 4883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.4s IncrementalHoareTripleChecker+Time [2023-12-21 18:15:27,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2513 Valid, 3845 Invalid, 5034 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [151 Valid, 4883 Invalid, 0 Unknown, 0 Unchecked, 76.4s Time] [2023-12-21 18:15:27,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-21 18:15:27,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 323. [2023-12-21 18:15:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 319 states have (on average 1.3103448275862069) internal successors, (418), 319 states have internal predecessors, (418), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:15:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 422 transitions. [2023-12-21 18:15:27,650 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 422 transitions. Word has length 74 [2023-12-21 18:15:27,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:15:27,650 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 422 transitions. [2023-12-21 18:15:27,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.371428571428571) internal successors, (153), 35 states have internal predecessors, (153), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 18:15:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 422 transitions. [2023-12-21 18:15:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 18:15:27,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:15:27,657 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 19, 18, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:15:27,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 18:15:27,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-21 18:15:28,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-21 18:15:28,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:15:28,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:15:28,069 INFO L85 PathProgramCache]: Analyzing trace with hash -669999660, now seen corresponding path program 3 times [2023-12-21 18:15:28,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:15:28,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353576367] [2023-12-21 18:15:28,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:15:28,070 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 18:15:28,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:15:28,071 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:15:28,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 18:15:28,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 18:15:28,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:15:28,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 18:15:28,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:15:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2023-12-21 18:15:29,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:16:18,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:16:18,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353576367] [2023-12-21 18:16:18,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353576367] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 18:16:18,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1239660418] [2023-12-21 18:16:18,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 18:16:18,686 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 18:16:18,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 18:16:18,687 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 18:16:18,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-21 18:16:19,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 18:16:19,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:16:19,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 18:16:19,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:16:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2023-12-21 18:16:21,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:17:30,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1239660418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 18:17:30,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:17:30,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 10 [2023-12-21 18:17:30,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881269784] [2023-12-21 18:17:30,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:17:30,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 18:17:30,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:17:30,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 18:17:30,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-12-21 18:17:30,720 INFO L87 Difference]: Start difference. First operand 323 states and 422 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:17:33,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:17:33,726 INFO L93 Difference]: Finished difference Result 330 states and 430 transitions. [2023-12-21 18:17:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 18:17:33,726 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 134 [2023-12-21 18:17:33,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:17:33,728 INFO L225 Difference]: With dead ends: 330 [2023-12-21 18:17:33,728 INFO L226 Difference]: Without dead ends: 328 [2023-12-21 18:17:33,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2023-12-21 18:17:33,728 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 18:17:33,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 86 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 18:17:33,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-21 18:17:33,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2023-12-21 18:17:33,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 324 states have (on average 1.308641975308642) internal successors, (424), 324 states have internal predecessors, (424), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:17:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 428 transitions. [2023-12-21 18:17:33,748 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 428 transitions. Word has length 134 [2023-12-21 18:17:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:17:33,748 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 428 transitions. [2023-12-21 18:17:33,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:17:33,748 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 428 transitions. [2023-12-21 18:17:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 18:17:33,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:17:33,750 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 19, 18, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:17:33,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-21 18:17:33,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 18:17:34,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:17:34,163 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:17:34,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:17:34,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1115082912, now seen corresponding path program 4 times [2023-12-21 18:17:34,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:17:34,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566952800] [2023-12-21 18:17:34,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 18:17:34,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:17:34,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:17:34,182 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:17:34,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 18:17:35,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 18:17:35,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:17:35,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 18:17:35,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:17:35,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 18:17:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 417 proven. 46 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2023-12-21 18:17:35,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:17:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 417 proven. 46 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2023-12-21 18:17:35,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:17:35,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566952800] [2023-12-21 18:17:35,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566952800] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:17:35,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:17:35,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-21 18:17:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400259079] [2023-12-21 18:17:35,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:17:35,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 18:17:35,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:17:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 18:17:35,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-21 18:17:35,522 INFO L87 Difference]: Start difference. First operand 328 states and 428 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:17:37,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:17:37,818 INFO L93 Difference]: Finished difference Result 762 states and 965 transitions. [2023-12-21 18:17:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 18:17:37,818 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 139 [2023-12-21 18:17:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:17:37,820 INFO L225 Difference]: With dead ends: 762 [2023-12-21 18:17:37,820 INFO L226 Difference]: Without dead ends: 565 [2023-12-21 18:17:37,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=437, Invalid=1045, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 18:17:37,821 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 255 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:17:37,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 327 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 18:17:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-12-21 18:17:37,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 352. [2023-12-21 18:17:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 348 states have (on average 1.2701149425287357) internal successors, (442), 348 states have internal predecessors, (442), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:17:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 446 transitions. [2023-12-21 18:17:37,843 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 446 transitions. Word has length 139 [2023-12-21 18:17:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:17:37,843 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 446 transitions. [2023-12-21 18:17:37,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:17:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 446 transitions. [2023-12-21 18:17:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 18:17:37,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:17:37,844 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 13, 12, 10, 9, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:17:37,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 18:17:38,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:17:38,073 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:17:38,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:17:38,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1301452640, now seen corresponding path program 5 times [2023-12-21 18:17:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:17:38,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071220571] [2023-12-21 18:17:38,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 18:17:38,073 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 18:17:38,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:17:38,074 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:17:38,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 18:17:38,321 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-21 18:17:38,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:17:38,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 18:17:38,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:17:38,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-21 18:17:38,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2023-12-21 18:17:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 676 proven. 1 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-12-21 18:17:38,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:17:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 676 proven. 1 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-12-21 18:17:38,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:17:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071220571] [2023-12-21 18:17:38,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071220571] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 18:17:38,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:17:38,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-21 18:17:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353195680] [2023-12-21 18:17:38,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:17:38,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 18:17:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:17:38,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 18:17:38,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 18:17:38,737 INFO L87 Difference]: Start difference. First operand 352 states and 446 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:17:39,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 18:17:39,391 INFO L93 Difference]: Finished difference Result 676 states and 856 transitions. [2023-12-21 18:17:39,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 18:17:39,392 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 139 [2023-12-21 18:17:39,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 18:17:39,395 INFO L225 Difference]: With dead ends: 676 [2023-12-21 18:17:39,395 INFO L226 Difference]: Without dead ends: 599 [2023-12-21 18:17:39,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-21 18:17:39,397 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 18:17:39,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 60 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 18:17:39,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-12-21 18:17:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 514. [2023-12-21 18:17:39,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 510 states have (on average 1.2352941176470589) internal successors, (630), 510 states have internal predecessors, (630), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:17:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 634 transitions. [2023-12-21 18:17:39,424 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 634 transitions. Word has length 139 [2023-12-21 18:17:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 18:17:39,425 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 634 transitions. [2023-12-21 18:17:39,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 18:17:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 634 transitions. [2023-12-21 18:17:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 18:17:39,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 18:17:39,426 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 12, 11, 11, 10, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 18:17:39,435 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 (16)] Ended with exit code 0 [2023-12-21 18:17:39,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 18:17:39,633 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 18:17:39,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 18:17:39,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1533537828, now seen corresponding path program 6 times [2023-12-21 18:17:39,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 18:17:39,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836124705] [2023-12-21 18:17:39,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 18:17:39,635 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 18:17:39,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 18:17:39,636 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 18:17:39,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 18:17:40,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 18:17:40,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:17:40,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 18:17:40,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:17:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2023-12-21 18:17:42,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:19:33,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 18:19:33,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836124705] [2023-12-21 18:19:33,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836124705] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 18:19:33,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [587423323] [2023-12-21 18:19:33,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 18:19:33,112 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 18:19:33,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 18:19:33,114 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 18:19:33,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-21 18:19:33,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 18:19:33,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 18:19:33,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 18:19:33,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 18:19:36,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-21 18:19:37,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2023-12-21 18:19:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 106 proven. 16 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2023-12-21 18:19:53,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 18:24:01,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [587423323] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 18:24:01,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 18:24:01,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 20 [2023-12-21 18:24:01,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144153601] [2023-12-21 18:24:01,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 18:24:01,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 18:24:01,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 18:24:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 18:24:01,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 18:24:01,230 INFO L87 Difference]: Start difference. First operand 514 states and 634 transitions. Second operand has 21 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 18:24:28,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-21 18:24:43,080 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 (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:24:43,103 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 18:24:43,113 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 18:24:44,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-21 18:24:44,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-21 18:24:44,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 18:24:44,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 139.3s TimeCoverageRelationStatistics Valid=467, Invalid=1339, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 18:24:44,161 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-21 18:24:44,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 52 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-21 18:24:44,162 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 18:24:44,163 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (514states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-21 18:24:44,166 INFO L445 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1, 1, 1] [2023-12-21 18:24:44,168 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 18:24:44,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:24:44 BoogieIcfgContainer [2023-12-21 18:24:44,170 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 18:24:44,171 INFO L158 Benchmark]: Toolchain (without parser) took 882421.73ms. Allocated memory was 280.0MB in the beginning and 336.6MB in the end (delta: 56.6MB). Free memory was 235.3MB in the beginning and 160.9MB in the end (delta: 74.4MB). Peak memory consumption was 131.5MB. Max. memory is 8.0GB. [2023-12-21 18:24:44,171 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 18:24:44,171 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.37ms. Allocated memory is still 280.0MB. Free memory was 234.7MB in the beginning and 223.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 18:24:44,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.80ms. Allocated memory is still 280.0MB. Free memory was 223.2MB in the beginning and 221.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:24:44,172 INFO L158 Benchmark]: Boogie Preprocessor took 53.94ms. Allocated memory is still 280.0MB. Free memory was 221.6MB in the beginning and 219.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 18:24:44,172 INFO L158 Benchmark]: RCFGBuilder took 651.81ms. Allocated memory is still 280.0MB. Free memory was 219.5MB in the beginning and 205.4MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 18:24:44,173 INFO L158 Benchmark]: TraceAbstraction took 881462.01ms. Allocated memory was 280.0MB in the beginning and 336.6MB in the end (delta: 56.6MB). Free memory was 204.9MB in the beginning and 160.9MB in the end (delta: 44.0MB). Peak memory consumption was 101.1MB. Max. memory is 8.0GB. [2023-12-21 18:24:44,175 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.37ms. Allocated memory is still 280.0MB. Free memory was 234.7MB in the beginning and 223.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.80ms. Allocated memory is still 280.0MB. Free memory was 223.2MB in the beginning and 221.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.94ms. Allocated memory is still 280.0MB. Free memory was 221.6MB in the beginning and 219.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 651.81ms. Allocated memory is still 280.0MB. Free memory was 219.5MB in the beginning and 205.4MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 881462.01ms. Allocated memory was 280.0MB in the beginning and 336.6MB in the end (delta: 56.6MB). Free memory was 204.9MB in the beginning and 160.9MB in the end (delta: 44.0MB). Peak memory consumption was 101.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 4]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 4). Cancelled while NwaCegarLoop was constructing difference of abstraction (514states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 881.4s, OverallIterations: 13, TraceHistogramMax: 22, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 301.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3740 SdHoareTripleChecker+Valid, 95.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3740 mSDsluCounter, 5037 SdHoareTripleChecker+Invalid, 84.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4588 mSDsCounter, 246 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6408 IncrementalHoareTripleChecker+Invalid, 6654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 246 mSolverCounterUnsat, 449 mSDtfsCounter, 6408 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2526 GetRequests, 2216 SyntacticMatches, 1 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5827 ImplicationChecksByTransitivity, 375.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=514occurred in iteration=12, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 2073 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 5.1s SatisfiabilityAnalysisTime, 570.1s InterpolantComputationTime, 1258 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1732 ConstructedInterpolants, 30 QuantifiedInterpolants, 10722 SizeOfPredicates, 85 NumberOfNonLiveVariables, 1783 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 24 InterpolantComputations, 3 PerfectInterpolantSequences, 9862/10598 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