/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/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 18:25:43,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 18:25:44,033 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 18:25:44,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 18:25:44,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 18:25:44,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 18:25:44,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 18:25:44,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 18:25:44,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 18:25:44,081 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 18:25:44,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 18:25:44,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 18:25:44,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 18:25:44,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 18:25:44,083 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 18:25:44,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 18:25:44,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 18:25:44,084 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 18:25:44,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 18:25:44,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 18:25:44,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 18:25:44,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 18:25:44,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 18:25:44,087 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 18:25:44,087 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 18:25:44,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 18:25:44,088 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 18:25:44,088 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 18:25:44,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 18:25:44,089 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 18:25:44,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 18:25:44,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 18:25:44,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 18:25:44,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 18:25:44,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 18:25:44,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 18:25:44,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 18:25:44,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 18:25:44,091 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 18:25:44,092 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 18:25:44,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 18:25:44,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 18:25:44,092 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 18:25:44,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 18:25:44,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 18:25:44,093 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 18:25:44,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 18:25:44,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 18:25:44,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 18:25:44,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 18:25:44,334 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 18:25:44,336 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 18:25:44,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i [2023-12-24 18:25:45,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 18:25:45,859 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 18:25:45,859 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i [2023-12-24 18:25:45,867 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff45a8354/d00a7ff0d2534eaa90061e03efe7909b/FLAGbe9263994 [2023-12-24 18:25:45,886 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff45a8354/d00a7ff0d2534eaa90061e03efe7909b [2023-12-24 18:25:45,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 18:25:45,890 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 18:25:45,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 18:25:45,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 18:25:45,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 18:25:45,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:25:45" (1/1) ... [2023-12-24 18:25:45,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3387172d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:45, skipping insertion in model container [2023-12-24 18:25:45,903 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:25:45" (1/1) ... [2023-12-24 18:25:45,930 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 18:25:46,063 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i[916,929] [2023-12-24 18:25:46,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 18:25:46,148 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 18:25:46,161 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i[916,929] [2023-12-24 18:25:46,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 18:25:46,228 INFO L206 MainTranslator]: Completed translation [2023-12-24 18:25:46,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46 WrapperNode [2023-12-24 18:25:46,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 18:25:46,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 18:25:46,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 18:25:46,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 18:25:46,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,294 INFO L138 Inliner]: procedures = 33, calls = 152, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 435 [2023-12-24 18:25:46,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 18:25:46,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 18:25:46,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 18:25:46,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 18:25:46,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,314 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,340 INFO L175 MemorySlicer]: Split 125 memory accesses to 2 slices as follows [2, 123]. 98 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 11]. The 15 writes are split as follows [0, 15]. [2023-12-24 18:25:46,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 18:25:46,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 18:25:46,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 18:25:46,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 18:25:46,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (1/1) ... [2023-12-24 18:25:46,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 18:25:46,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 18:25:46,425 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) [2023-12-24 18:25:46,455 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 [2023-12-24 18:25:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 18:25:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 18:25:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 18:25:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 18:25:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 18:25:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 18:25:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 18:25:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 18:25:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 18:25:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 18:25:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 18:25:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 18:25:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 18:25:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 18:25:46,473 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 18:25:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 18:25:46,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 18:25:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 18:25:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 18:25:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 18:25:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 18:25:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 18:25:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 18:25:46,648 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 18:25:46,650 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 18:25:47,163 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 18:25:47,214 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 18:25:47,214 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 18:25:47,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:25:47 BoogieIcfgContainer [2023-12-24 18:25:47,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 18:25:47,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 18:25:47,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 18:25:47,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 18:25:47,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 06:25:45" (1/3) ... [2023-12-24 18:25:47,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaa0086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:25:47, skipping insertion in model container [2023-12-24 18:25:47,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:25:46" (2/3) ... [2023-12-24 18:25:47,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaa0086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:25:47, skipping insertion in model container [2023-12-24 18:25:47,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:25:47" (3/3) ... [2023-12-24 18:25:47,222 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-58.i [2023-12-24 18:25:47,236 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 18:25:47,237 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 18:25:47,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 18:25:47,285 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;@7a6be4e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 18:25:47,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 18:25:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 68 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 18:25:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 18:25:47,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:47,306 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:25:47,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:47,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1754605643, now seen corresponding path program 1 times [2023-12-24 18:25:47,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:47,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571087171] [2023-12-24 18:25:47,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:47,324 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 [2023-12-24 18:25:47,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:47,326 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) [2023-12-24 18:25:47,328 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 [2023-12-24 18:25:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:47,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 18:25:47,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-12-24 18:25:47,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:25:47,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:47,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571087171] [2023-12-24 18:25:47,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571087171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:25:47,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:25:47,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 18:25:47,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477815389] [2023-12-24 18:25:47,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:47,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 18:25:47,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:47,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 18:25:47,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 18:25:47,651 INFO L87 Difference]: Start difference. First operand has 85 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 68 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:25:47,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:47,714 INFO L93 Difference]: Finished difference Result 163 states and 259 transitions. [2023-12-24 18:25:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 18:25:47,718 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 111 [2023-12-24 18:25:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:47,724 INFO L225 Difference]: With dead ends: 163 [2023-12-24 18:25:47,724 INFO L226 Difference]: Without dead ends: 79 [2023-12-24 18:25:47,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 18:25:47,729 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:47,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 18:25:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-24 18:25:47,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-24 18:25:47,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 18:25:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 113 transitions. [2023-12-24 18:25:47,769 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 113 transitions. Word has length 111 [2023-12-24 18:25:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:47,769 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 113 transitions. [2023-12-24 18:25:47,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:25:47,770 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 113 transitions. [2023-12-24 18:25:47,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 18:25:47,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:47,772 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:25:47,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 18:25:47,981 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 [2023-12-24 18:25:47,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:47,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:47,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1691531369, now seen corresponding path program 1 times [2023-12-24 18:25:47,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:47,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596932750] [2023-12-24 18:25:47,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:47,984 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 [2023-12-24 18:25:47,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:47,985 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) [2023-12-24 18:25:47,989 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 [2023-12-24 18:25:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:48,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:25:48,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:25:48,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:25:48,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:48,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596932750] [2023-12-24 18:25:48,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596932750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:25:48,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:25:48,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:25:48,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215526475] [2023-12-24 18:25:48,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:48,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:25:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:25:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:25:48,246 INFO L87 Difference]: Start difference. First operand 79 states and 113 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:25:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:48,343 INFO L93 Difference]: Finished difference Result 166 states and 237 transitions. [2023-12-24 18:25:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:25:48,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-24 18:25:48,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:48,346 INFO L225 Difference]: With dead ends: 166 [2023-12-24 18:25:48,346 INFO L226 Difference]: Without dead ends: 88 [2023-12-24 18:25:48,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:25:48,348 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 10 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:48,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 412 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 18:25:48,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-24 18:25:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2023-12-24 18:25:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 66 states have internal predecessors, (87), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 18:25:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2023-12-24 18:25:48,358 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 111 [2023-12-24 18:25:48,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:48,359 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2023-12-24 18:25:48,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:25:48,359 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2023-12-24 18:25:48,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 18:25:48,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:48,361 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:25:48,369 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 [2023-12-24 18:25:48,568 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 [2023-12-24 18:25:48,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:48,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:48,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1691590951, now seen corresponding path program 1 times [2023-12-24 18:25:48,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:48,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207766117] [2023-12-24 18:25:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:48,570 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 [2023-12-24 18:25:48,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:48,572 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) [2023-12-24 18:25:48,578 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 [2023-12-24 18:25:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:48,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 18:25:48,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:48,892 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 14 treesize of output 10 [2023-12-24 18:25:48,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 [2023-12-24 18:25:49,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:49,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 18:25:49,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:49,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2023-12-24 18:25:49,645 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:49,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2023-12-24 18:25:49,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:49,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2023-12-24 18:25:50,110 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:50,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2023-12-24 18:25:50,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:50,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2023-12-24 18:25:50,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:50,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2023-12-24 18:25:50,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:50,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 62 [2023-12-24 18:25:50,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:50,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 66 [2023-12-24 18:25:50,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:50,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 47 [2023-12-24 18:25:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-24 18:25:50,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:25:50,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:50,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207766117] [2023-12-24 18:25:50,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207766117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:25:50,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:25:50,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 18:25:50,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011709970] [2023-12-24 18:25:50,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:50,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 18:25:50,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:50,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 18:25:50,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:25:50,594 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-24 18:25:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:52,008 INFO L93 Difference]: Finished difference Result 229 states and 322 transitions. [2023-12-24 18:25:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 18:25:52,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 111 [2023-12-24 18:25:52,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:52,012 INFO L225 Difference]: With dead ends: 229 [2023-12-24 18:25:52,012 INFO L226 Difference]: Without dead ends: 147 [2023-12-24 18:25:52,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-12-24 18:25:52,013 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 305 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:52,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 232 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 18:25:52,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-24 18:25:52,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 97. [2023-12-24 18:25:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 80 states have (on average 1.3375) internal successors, (107), 80 states have internal predecessors, (107), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 18:25:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2023-12-24 18:25:52,040 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 111 [2023-12-24 18:25:52,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:52,041 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2023-12-24 18:25:52,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-24 18:25:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2023-12-24 18:25:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 18:25:52,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:52,043 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:25:52,058 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 [2023-12-24 18:25:52,254 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 [2023-12-24 18:25:52,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:52,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:52,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1902311767, now seen corresponding path program 1 times [2023-12-24 18:25:52,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:52,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922528563] [2023-12-24 18:25:52,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:52,256 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 [2023-12-24 18:25:52,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:52,257 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) [2023-12-24 18:25:52,258 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 [2023-12-24 18:25:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:52,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 18:25:52,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:52,526 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 19 treesize of output 1 [2023-12-24 18:25:52,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-24 18:25:53,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:53,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 48 [2023-12-24 18:25:53,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:53,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 51 [2023-12-24 18:25:54,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:54,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 61 [2023-12-24 18:25:54,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:54,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 64 [2023-12-24 18:25:54,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:54,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 64 [2023-12-24 18:25:55,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2023-12-24 18:25:55,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:55,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 114 treesize of output 95 [2023-12-24 18:25:55,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:55,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 95 [2023-12-24 18:25:55,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:55,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 119 treesize of output 55 [2023-12-24 18:25:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 275 proven. 102 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-24 18:25:55,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:25:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:25:56,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:56,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922528563] [2023-12-24 18:25:56,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922528563] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:25:56,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:25:56,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 29 [2023-12-24 18:25:56,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703631475] [2023-12-24 18:25:56,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:56,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:25:56,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:56,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:25:56,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2023-12-24 18:25:56,354 INFO L87 Difference]: Start difference. First operand 97 states and 137 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:25:57,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:57,878 INFO L93 Difference]: Finished difference Result 274 states and 382 transitions. [2023-12-24 18:25:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:25:57,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-24 18:25:57,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:57,881 INFO L225 Difference]: With dead ends: 274 [2023-12-24 18:25:57,881 INFO L226 Difference]: Without dead ends: 178 [2023-12-24 18:25:57,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-12-24 18:25:57,883 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 288 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:57,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 253 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 18:25:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-24 18:25:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2023-12-24 18:25:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 112 states have (on average 1.3303571428571428) internal successors, (149), 113 states have internal predecessors, (149), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-24 18:25:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 183 transitions. [2023-12-24 18:25:57,911 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 183 transitions. Word has length 111 [2023-12-24 18:25:57,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:57,911 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 183 transitions. [2023-12-24 18:25:57,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:25:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 183 transitions. [2023-12-24 18:25:57,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 18:25:57,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:57,914 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:25:57,929 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 [2023-12-24 18:25:58,132 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 [2023-12-24 18:25:58,133 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:58,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:58,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1992225650, now seen corresponding path program 1 times [2023-12-24 18:25:58,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:58,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086806926] [2023-12-24 18:25:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:58,134 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 [2023-12-24 18:25:58,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:58,135 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) [2023-12-24 18:25:58,137 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 [2023-12-24 18:25:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:58,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 18:25:58,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:58,394 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 8 treesize of output 1 [2023-12-24 18:25:58,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:58,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 18:25:58,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:58,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2023-12-24 18:25:58,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:58,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2023-12-24 18:25:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:25:58,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:25:58,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:58,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086806926] [2023-12-24 18:25:58,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086806926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:25:58,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:25:58,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:25:58,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871904278] [2023-12-24 18:25:58,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:58,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:25:58,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:58,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:25:58,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:25:58,486 INFO L87 Difference]: Start difference. First operand 132 states and 183 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:25:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:59,387 INFO L93 Difference]: Finished difference Result 367 states and 507 transitions. [2023-12-24 18:25:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 18:25:59,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-24 18:25:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:59,392 INFO L225 Difference]: With dead ends: 367 [2023-12-24 18:25:59,392 INFO L226 Difference]: Without dead ends: 236 [2023-12-24 18:25:59,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:25:59,393 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 252 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:59,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 387 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 18:25:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-24 18:25:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 209. [2023-12-24 18:25:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 170 states have (on average 1.2941176470588236) internal successors, (220), 172 states have internal predecessors, (220), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 18:25:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 288 transitions. [2023-12-24 18:25:59,428 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 288 transitions. Word has length 111 [2023-12-24 18:25:59,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:59,429 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 288 transitions. [2023-12-24 18:25:59,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:25:59,429 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 288 transitions. [2023-12-24 18:25:59,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 18:25:59,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:59,431 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:25:59,442 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 [2023-12-24 18:25:59,642 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 [2023-12-24 18:25:59,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:59,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:59,643 INFO L85 PathProgramCache]: Analyzing trace with hash 670522597, now seen corresponding path program 1 times [2023-12-24 18:25:59,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:59,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068478560] [2023-12-24 18:25:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:59,644 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 [2023-12-24 18:25:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:59,645 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) [2023-12-24 18:25:59,648 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 [2023-12-24 18:25:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:59,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 18:25:59,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:59,923 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 14 treesize of output 10 [2023-12-24 18:26:00,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 52 treesize of output 24 [2023-12-24 18:26:00,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 47 treesize of output 34 [2023-12-24 18:26:00,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:00,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 37 [2023-12-24 18:26:00,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:00,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 47 [2023-12-24 18:26:00,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:00,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 50 [2023-12-24 18:26:01,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:01,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 50 [2023-12-24 18:26:01,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 50 [2023-12-24 18:26:01,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:01,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 82 [2023-12-24 18:26:01,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:01,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 109 treesize of output 87 [2023-12-24 18:26:01,693 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:01,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 56 [2023-12-24 18:26:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 282 proven. 66 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-24 18:26:01,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:26:02,192 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:26:02,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:02,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068478560] [2023-12-24 18:26:02,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068478560] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:26:02,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:26:02,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2023-12-24 18:26:02,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76560418] [2023-12-24 18:26:02,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:02,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:26:02,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:02,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:26:02,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-12-24 18:26:02,195 INFO L87 Difference]: Start difference. First operand 209 states and 288 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:03,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:03,734 INFO L93 Difference]: Finished difference Result 440 states and 604 transitions. [2023-12-24 18:26:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:26:03,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-24 18:26:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:03,737 INFO L225 Difference]: With dead ends: 440 [2023-12-24 18:26:03,737 INFO L226 Difference]: Without dead ends: 240 [2023-12-24 18:26:03,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 199 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-12-24 18:26:03,739 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 121 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:03,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 404 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 18:26:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-24 18:26:03,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 184. [2023-12-24 18:26:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 147 states have (on average 1.272108843537415) internal successors, (187), 148 states have internal predecessors, (187), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-24 18:26:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 251 transitions. [2023-12-24 18:26:03,763 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 251 transitions. Word has length 111 [2023-12-24 18:26:03,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:03,763 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 251 transitions. [2023-12-24 18:26:03,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:03,763 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 251 transitions. [2023-12-24 18:26:03,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 18:26:03,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:03,765 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:26:03,779 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 [2023-12-24 18:26:03,974 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 [2023-12-24 18:26:03,974 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:03,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:03,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1371587175, now seen corresponding path program 1 times [2023-12-24 18:26:03,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:03,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098926766] [2023-12-24 18:26:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:03,976 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 [2023-12-24 18:26:03,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:03,977 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) [2023-12-24 18:26:04,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 18:26:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:04,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 18:26:04,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:04,216 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 19 treesize of output 1 [2023-12-24 18:26:04,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:26:04,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:26:04,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:26:04,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:26:04,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:26:04,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 24 [2023-12-24 18:26:04,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:04,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 27 [2023-12-24 18:26:04,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:04,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 35 [2023-12-24 18:26:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 224 proven. 21 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-24 18:26:04,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:26:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:26:04,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:04,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098926766] [2023-12-24 18:26:04,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098926766] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:26:04,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:26:04,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2023-12-24 18:26:04,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851724809] [2023-12-24 18:26:04,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:04,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:26:04,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:04,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:26:04,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-24 18:26:04,619 INFO L87 Difference]: Start difference. First operand 184 states and 251 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:05,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:05,255 INFO L93 Difference]: Finished difference Result 401 states and 546 transitions. [2023-12-24 18:26:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:26:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-24 18:26:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:05,258 INFO L225 Difference]: With dead ends: 401 [2023-12-24 18:26:05,258 INFO L226 Difference]: Without dead ends: 226 [2023-12-24 18:26:05,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-24 18:26:05,260 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 126 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:05,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 555 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:26:05,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-24 18:26:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2023-12-24 18:26:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 178 states have (on average 1.2696629213483146) internal successors, (226), 180 states have internal predecessors, (226), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:26:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 302 transitions. [2023-12-24 18:26:05,291 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 302 transitions. Word has length 111 [2023-12-24 18:26:05,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:05,292 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 302 transitions. [2023-12-24 18:26:05,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:05,292 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 302 transitions. [2023-12-24 18:26:05,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 18:26:05,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:05,294 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:26:05,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 18:26:05,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:26:05,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:05,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:05,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2139225415, now seen corresponding path program 1 times [2023-12-24 18:26:05,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:05,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924934461] [2023-12-24 18:26:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:05,504 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 [2023-12-24 18:26:05,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:05,506 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:26:05,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 18:26:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:05,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 18:26:05,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:05,728 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 8 treesize of output 1 [2023-12-24 18:26:05,733 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 14 treesize of output 10 [2023-12-24 18:26:05,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 29 [2023-12-24 18:26:05,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:05,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2023-12-24 18:26:06,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:06,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2023-12-24 18:26:06,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:06,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2023-12-24 18:26:06,445 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:06,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 45 [2023-12-24 18:26:06,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:06,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 45 [2023-12-24 18:26:06,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:06,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 45 [2023-12-24 18:26:06,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:06,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 74 [2023-12-24 18:26:06,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:06,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 73 [2023-12-24 18:26:07,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:07,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 108 treesize of output 54 [2023-12-24 18:26:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 274 proven. 33 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-24 18:26:07,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:26:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:26:07,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:07,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924934461] [2023-12-24 18:26:07,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924934461] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:26:07,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:26:07,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 19 [2023-12-24 18:26:07,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902624058] [2023-12-24 18:26:07,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:07,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:26:07,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:07,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:26:07,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-12-24 18:26:07,249 INFO L87 Difference]: Start difference. First operand 223 states and 302 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:07,855 INFO L93 Difference]: Finished difference Result 502 states and 684 transitions. [2023-12-24 18:26:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 18:26:07,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 18:26:07,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:07,859 INFO L225 Difference]: With dead ends: 502 [2023-12-24 18:26:07,859 INFO L226 Difference]: Without dead ends: 288 [2023-12-24 18:26:07,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2023-12-24 18:26:07,861 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 152 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:07,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 452 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:26:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-24 18:26:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 238. [2023-12-24 18:26:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 193 states have (on average 1.2797927461139897) internal successors, (247), 195 states have internal predecessors, (247), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:26:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 323 transitions. [2023-12-24 18:26:07,886 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 323 transitions. Word has length 112 [2023-12-24 18:26:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:07,887 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 323 transitions. [2023-12-24 18:26:07,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 323 transitions. [2023-12-24 18:26:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 18:26:07,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:07,888 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:26:07,899 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 (9)] Ended with exit code 0 [2023-12-24 18:26:08,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:26:08,097 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:08,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:08,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1438160837, now seen corresponding path program 1 times [2023-12-24 18:26:08,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:08,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036009154] [2023-12-24 18:26:08,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:08,098 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 [2023-12-24 18:26:08,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:08,099 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) [2023-12-24 18:26:08,099 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 [2023-12-24 18:26:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:08,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 18:26:08,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:08,382 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 8 treesize of output 1 [2023-12-24 18:26:08,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 22 [2023-12-24 18:26:08,445 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:08,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2023-12-24 18:26:08,456 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:08,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2023-12-24 18:26:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:26:08,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:26:08,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:08,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036009154] [2023-12-24 18:26:08,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036009154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:26:08,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:26:08,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:26:08,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982329533] [2023-12-24 18:26:08,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:08,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:26:08,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:08,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:26:08,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:26:08,471 INFO L87 Difference]: Start difference. First operand 238 states and 323 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:09,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:09,179 INFO L93 Difference]: Finished difference Result 468 states and 636 transitions. [2023-12-24 18:26:09,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:26:09,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 18:26:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:09,182 INFO L225 Difference]: With dead ends: 468 [2023-12-24 18:26:09,182 INFO L226 Difference]: Without dead ends: 239 [2023-12-24 18:26:09,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:26:09,183 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 181 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:09,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 263 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 18:26:09,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-24 18:26:09,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 223. [2023-12-24 18:26:09,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 178 states have (on average 1.2584269662921348) internal successors, (224), 180 states have internal predecessors, (224), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:26:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 300 transitions. [2023-12-24 18:26:09,211 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 300 transitions. Word has length 112 [2023-12-24 18:26:09,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:09,211 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 300 transitions. [2023-12-24 18:26:09,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 300 transitions. [2023-12-24 18:26:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 18:26:09,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:09,213 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:26:09,224 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 [2023-12-24 18:26:09,421 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 [2023-12-24 18:26:09,421 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:09,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:09,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1838590716, now seen corresponding path program 1 times [2023-12-24 18:26:09,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:09,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95182255] [2023-12-24 18:26:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:09,422 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 [2023-12-24 18:26:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:09,424 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) [2023-12-24 18:26:09,431 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 [2023-12-24 18:26:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:09,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 18:26:09,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:09,633 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 19 treesize of output 1 [2023-12-24 18:26:09,639 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 19 treesize of output 1 [2023-12-24 18:26:09,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 30 [2023-12-24 18:26:09,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:09,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 18:26:09,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:09,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 18:26:10,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:10,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 18:26:10,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:10,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 18:26:10,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:10,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 18:26:10,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:10,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 18:26:10,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:10,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 60 [2023-12-24 18:26:10,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:10,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 63 [2023-12-24 18:26:10,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:10,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 37 [2023-12-24 18:26:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 128 proven. 66 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-24 18:26:10,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:26:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:26:10,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:10,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95182255] [2023-12-24 18:26:10,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95182255] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:26:10,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:26:10,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2023-12-24 18:26:10,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453244291] [2023-12-24 18:26:10,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:10,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:26:10,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:26:10,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-24 18:26:10,820 INFO L87 Difference]: Start difference. First operand 223 states and 300 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:11,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:11,365 INFO L93 Difference]: Finished difference Result 502 states and 678 transitions. [2023-12-24 18:26:11,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:26:11,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 18:26:11,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:11,368 INFO L225 Difference]: With dead ends: 502 [2023-12-24 18:26:11,368 INFO L226 Difference]: Without dead ends: 288 [2023-12-24 18:26:11,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-12-24 18:26:11,370 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 101 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:11,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 352 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:26:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-24 18:26:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 235. [2023-12-24 18:26:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 190 states have (on average 1.263157894736842) internal successors, (240), 192 states have internal predecessors, (240), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:26:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 316 transitions. [2023-12-24 18:26:11,393 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 316 transitions. Word has length 112 [2023-12-24 18:26:11,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:11,394 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 316 transitions. [2023-12-24 18:26:11,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 316 transitions. [2023-12-24 18:26:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 18:26:11,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:11,395 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:26:11,404 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 [2023-12-24 18:26:11,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:26:11,604 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:11,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:11,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1755312002, now seen corresponding path program 1 times [2023-12-24 18:26:11,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:11,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608458748] [2023-12-24 18:26:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:11,605 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 [2023-12-24 18:26:11,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:11,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:26:11,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 18:26:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:11,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 18:26:11,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:11,921 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 8 treesize of output 1 [2023-12-24 18:26:11,923 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 14 treesize of output 10 [2023-12-24 18:26:12,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 41 treesize of output 19 [2023-12-24 18:26:12,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 29 [2023-12-24 18:26:12,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:12,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2023-12-24 18:26:12,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:12,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2023-12-24 18:26:12,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:12,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 45 [2023-12-24 18:26:12,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:12,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 45 [2023-12-24 18:26:12,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:12,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 45 [2023-12-24 18:26:13,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:13,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 74 [2023-12-24 18:26:13,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:13,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 73 [2023-12-24 18:26:13,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:13,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 39 [2023-12-24 18:26:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 314 proven. 33 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-24 18:26:13,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:26:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:26:13,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608458748] [2023-12-24 18:26:13,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608458748] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:26:13,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:26:13,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 21 [2023-12-24 18:26:13,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21237904] [2023-12-24 18:26:13,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:13,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 18:26:13,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:13,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 18:26:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2023-12-24 18:26:13,641 INFO L87 Difference]: Start difference. First operand 235 states and 316 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:14,524 INFO L93 Difference]: Finished difference Result 488 states and 658 transitions. [2023-12-24 18:26:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:26:14,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 18:26:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:14,527 INFO L225 Difference]: With dead ends: 488 [2023-12-24 18:26:14,527 INFO L226 Difference]: Without dead ends: 262 [2023-12-24 18:26:14,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 200 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2023-12-24 18:26:14,528 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 154 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:14,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 531 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 18:26:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-24 18:26:14,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 238. [2023-12-24 18:26:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 193 states have (on average 1.2590673575129534) internal successors, (243), 195 states have internal predecessors, (243), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:26:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 319 transitions. [2023-12-24 18:26:14,550 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 319 transitions. Word has length 112 [2023-12-24 18:26:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:14,550 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 319 transitions. [2023-12-24 18:26:14,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:14,551 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 319 transitions. [2023-12-24 18:26:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 18:26:14,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:14,552 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:26:14,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 18:26:14,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:26:14,760 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:14,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:14,760 INFO L85 PathProgramCache]: Analyzing trace with hash 868028678, now seen corresponding path program 1 times [2023-12-24 18:26:14,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:14,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041903142] [2023-12-24 18:26:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:14,761 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 [2023-12-24 18:26:14,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:14,762 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) [2023-12-24 18:26:14,798 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 [2023-12-24 18:26:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:14,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 18:26:15,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:15,013 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 19 treesize of output 1 [2023-12-24 18:26:15,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 30 [2023-12-24 18:26:15,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:15,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2023-12-24 18:26:15,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:15,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:15,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:15,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:15,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:15,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:16,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:16,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:16,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:16,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:16,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:16,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 59 [2023-12-24 18:26:16,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:16,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 62 [2023-12-24 18:26:16,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:16,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 39 [2023-12-24 18:26:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 200 proven. 66 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-24 18:26:16,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:26:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:26:16,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:16,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041903142] [2023-12-24 18:26:16,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041903142] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:26:16,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:26:16,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2023-12-24 18:26:16,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319852808] [2023-12-24 18:26:16,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:16,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 18:26:16,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:16,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 18:26:16,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2023-12-24 18:26:16,742 INFO L87 Difference]: Start difference. First operand 238 states and 319 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:17,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:17,760 INFO L93 Difference]: Finished difference Result 521 states and 700 transitions. [2023-12-24 18:26:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:26:17,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 18:26:17,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:17,773 INFO L225 Difference]: With dead ends: 521 [2023-12-24 18:26:17,773 INFO L226 Difference]: Without dead ends: 292 [2023-12-24 18:26:17,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2023-12-24 18:26:17,775 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 195 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:17,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 645 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 18:26:17,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-24 18:26:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 262. [2023-12-24 18:26:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 217 states have (on average 1.271889400921659) internal successors, (276), 219 states have internal predecessors, (276), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:26:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 352 transitions. [2023-12-24 18:26:17,803 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 352 transitions. Word has length 112 [2023-12-24 18:26:17,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:17,804 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 352 transitions. [2023-12-24 18:26:17,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 352 transitions. [2023-12-24 18:26:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 18:26:17,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:17,805 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:26:17,829 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 [2023-12-24 18:26:18,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:26:18,029 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:18,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:18,030 INFO L85 PathProgramCache]: Analyzing trace with hash 166964100, now seen corresponding path program 1 times [2023-12-24 18:26:18,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:18,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227587618] [2023-12-24 18:26:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:18,031 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 [2023-12-24 18:26:18,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:18,032 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:26:18,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 18:26:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:18,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 18:26:18,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:18,242 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 8 treesize of output 1 [2023-12-24 18:26:18,250 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 19 treesize of output 1 [2023-12-24 18:26:18,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 30 [2023-12-24 18:26:18,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:18,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2023-12-24 18:26:18,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:18,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:19,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:19,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:19,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:19,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:19,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:19,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:19,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:19,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:19,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:19,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 74 [2023-12-24 18:26:19,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:19,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 77 [2023-12-24 18:26:19,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:19,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 42 [2023-12-24 18:26:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 200 proven. 66 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-24 18:26:19,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:26:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:26:19,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:19,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227587618] [2023-12-24 18:26:19,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227587618] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:26:19,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:26:19,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2023-12-24 18:26:19,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731904513] [2023-12-24 18:26:19,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:19,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:26:19,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:26:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-12-24 18:26:19,862 INFO L87 Difference]: Start difference. First operand 262 states and 352 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:20,347 INFO L93 Difference]: Finished difference Result 521 states and 699 transitions. [2023-12-24 18:26:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:26:20,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-24 18:26:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:20,350 INFO L225 Difference]: With dead ends: 521 [2023-12-24 18:26:20,350 INFO L226 Difference]: Without dead ends: 260 [2023-12-24 18:26:20,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-12-24 18:26:20,351 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 113 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:20,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 281 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 18:26:20,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-24 18:26:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2023-12-24 18:26:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 212 states have (on average 1.2688679245283019) internal successors, (269), 214 states have internal predecessors, (269), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:26:20,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 345 transitions. [2023-12-24 18:26:20,407 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 345 transitions. Word has length 112 [2023-12-24 18:26:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:20,407 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 345 transitions. [2023-12-24 18:26:20,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 345 transitions. [2023-12-24 18:26:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 18:26:20,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:20,408 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:26:20,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 18:26:20,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:26:20,609 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:20,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:20,609 INFO L85 PathProgramCache]: Analyzing trace with hash -790043146, now seen corresponding path program 1 times [2023-12-24 18:26:20,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:20,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499335546] [2023-12-24 18:26:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:20,610 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 [2023-12-24 18:26:20,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:20,612 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) [2023-12-24 18:26:20,613 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 [2023-12-24 18:26:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:21,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 18:26:21,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:21,029 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 8 treesize of output 1 [2023-12-24 18:26:21,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 30 [2023-12-24 18:26:21,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:21,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2023-12-24 18:26:21,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:21,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:21,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:21,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:21,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:21,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:21,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:21,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:21,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:21,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-24 18:26:21,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:21,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 64 [2023-12-24 18:26:22,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:22,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 79 [2023-12-24 18:26:22,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:22,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 126 treesize of output 56 [2023-12-24 18:26:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 200 proven. 66 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-24 18:26:22,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:26:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:26:22,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:22,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499335546] [2023-12-24 18:26:22,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499335546] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:26:22,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:26:22,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 19 [2023-12-24 18:26:22,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095608253] [2023-12-24 18:26:22,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:22,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:26:22,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:22,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:26:22,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2023-12-24 18:26:22,494 INFO L87 Difference]: Start difference. First operand 257 states and 345 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:22,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:22,993 INFO L93 Difference]: Finished difference Result 690 states and 917 transitions. [2023-12-24 18:26:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 18:26:22,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 113 [2023-12-24 18:26:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:22,997 INFO L225 Difference]: With dead ends: 690 [2023-12-24 18:26:22,997 INFO L226 Difference]: Without dead ends: 434 [2023-12-24 18:26:22,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2023-12-24 18:26:22,998 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 102 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:22,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 449 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 18:26:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-12-24 18:26:23,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 290. [2023-12-24 18:26:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 245 states have (on average 1.2448979591836735) internal successors, (305), 247 states have internal predecessors, (305), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:26:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 381 transitions. [2023-12-24 18:26:23,023 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 381 transitions. Word has length 113 [2023-12-24 18:26:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:23,023 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 381 transitions. [2023-12-24 18:26:23,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:26:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 381 transitions. [2023-12-24 18:26:23,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 18:26:23,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:23,024 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:26:23,036 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 [2023-12-24 18:26:23,235 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 [2023-12-24 18:26:23,235 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:23,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:23,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1100486565, now seen corresponding path program 1 times [2023-12-24 18:26:23,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:23,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237603827] [2023-12-24 18:26:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:23,236 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 [2023-12-24 18:26:23,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:23,237 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) [2023-12-24 18:26:23,239 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 [2023-12-24 18:26:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:23,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 18:26:23,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:23,650 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 8 treesize of output 1 [2023-12-24 18:26:23,653 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 19 treesize of output 1 [2023-12-24 18:26:23,661 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 19 treesize of output 1 [2023-12-24 18:26:23,664 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 19 treesize of output 1 [2023-12-24 18:26:23,667 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 14 treesize of output 10 [2023-12-24 18:26:23,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:26:23,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:26:23,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:26:23,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:23,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 45 [2023-12-24 18:26:24,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:24,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 86 [2023-12-24 18:26:25,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:25,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 39 [2023-12-24 18:26:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-12-24 18:26:26,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:26:26,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:26,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237603827] [2023-12-24 18:26:26,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237603827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:26:26,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:26:26,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 18:26:26,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644697624] [2023-12-24 18:26:26,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:26,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:26:26,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:26,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:26:26,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:26:26,285 INFO L87 Difference]: Start difference. First operand 290 states and 381 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:26:32,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:26:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:37,082 INFO L93 Difference]: Finished difference Result 613 states and 801 transitions. [2023-12-24 18:26:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:26:37,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 114 [2023-12-24 18:26:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:37,085 INFO L225 Difference]: With dead ends: 613 [2023-12-24 18:26:37,085 INFO L226 Difference]: Without dead ends: 324 [2023-12-24 18:26:37,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-24 18:26:37,086 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 299 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:37,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 358 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 571 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2023-12-24 18:26:37,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-24 18:26:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 297. [2023-12-24 18:26:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 252 states have (on average 1.2380952380952381) internal successors, (312), 254 states have internal predecessors, (312), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:26:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 388 transitions. [2023-12-24 18:26:37,152 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 388 transitions. Word has length 114 [2023-12-24 18:26:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:37,153 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 388 transitions. [2023-12-24 18:26:37,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:26:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 388 transitions. [2023-12-24 18:26:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 18:26:37,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:37,156 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:26:37,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 18:26:37,367 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 [2023-12-24 18:26:37,367 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:37,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:37,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1175263191, now seen corresponding path program 1 times [2023-12-24 18:26:37,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:37,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025610461] [2023-12-24 18:26:37,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:37,368 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 [2023-12-24 18:26:37,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:37,370 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) [2023-12-24 18:26:37,404 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 [2023-12-24 18:26:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:38,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 18:26:38,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:38,156 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 8 treesize of output 1 [2023-12-24 18:26:38,161 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 14 treesize of output 10 [2023-12-24 18:26:38,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 [2023-12-24 18:26:38,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:38,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:26:38,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:38,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 18:26:38,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:38,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:26:38,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:38,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:26:39,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:26:39,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:39,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 62 [2023-12-24 18:26:40,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:40,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 95 [2023-12-24 18:26:42,456 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:42,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 124 treesize of output 48 [2023-12-24 18:26:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-24 18:26:42,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:26:42,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:42,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025610461] [2023-12-24 18:26:42,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025610461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:26:42,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:26:42,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 18:26:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742304171] [2023-12-24 18:26:42,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:42,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 18:26:42,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:42,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 18:26:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-24 18:26:42,878 INFO L87 Difference]: Start difference. First operand 297 states and 388 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-24 18:26:51,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:00,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:27:04,277 INFO L93 Difference]: Finished difference Result 628 states and 816 transitions. [2023-12-24 18:27:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:27:04,278 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2023-12-24 18:27:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:27:04,280 INFO L225 Difference]: With dead ends: 628 [2023-12-24 18:27:04,280 INFO L226 Difference]: Without dead ends: 332 [2023-12-24 18:27:04,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-12-24 18:27:04,281 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 488 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 74 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:27:04,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 497 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 917 Invalid, 2 Unknown, 0 Unchecked, 20.3s Time] [2023-12-24 18:27:04,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-24 18:27:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 304. [2023-12-24 18:27:04,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 259 states have (on average 1.2316602316602316) internal successors, (319), 261 states have internal predecessors, (319), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:27:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 395 transitions. [2023-12-24 18:27:04,311 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 395 transitions. Word has length 114 [2023-12-24 18:27:04,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:27:04,312 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 395 transitions. [2023-12-24 18:27:04,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-24 18:27:04,312 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 395 transitions. [2023-12-24 18:27:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 18:27:04,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:27:04,313 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:27:04,324 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 [2023-12-24 18:27:04,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:27:04,524 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:27:04,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:27:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash 560091996, now seen corresponding path program 1 times [2023-12-24 18:27:04,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:27:04,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151621749] [2023-12-24 18:27:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:27:04,526 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 [2023-12-24 18:27:04,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:27:04,527 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:27:04,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 18:27:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:27:05,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 18:27:05,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:27:05,183 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 8 treesize of output 1 [2023-12-24 18:27:05,187 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 19 treesize of output 1 [2023-12-24 18:27:05,190 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 19 treesize of output 1 [2023-12-24 18:27:05,193 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 19 treesize of output 1 [2023-12-24 18:27:05,196 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 19 treesize of output 1 [2023-12-24 18:27:05,199 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 19 treesize of output 1 [2023-12-24 18:27:05,202 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 19 treesize of output 1 [2023-12-24 18:27:05,204 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 19 treesize of output 1 [2023-12-24 18:27:05,207 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 [2023-12-24 18:27:05,744 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:05,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 60 [2023-12-24 18:27:06,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:06,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 31 [2023-12-24 18:27:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:27:06,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:27:06,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:27:06,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151621749] [2023-12-24 18:27:06,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151621749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:27:06,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:27:06,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:27:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217723715] [2023-12-24 18:27:06,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:27:06,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:27:06,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:27:06,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:27:06,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:27:06,795 INFO L87 Difference]: Start difference. First operand 304 states and 395 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:27:10,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:22,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:27:26,935 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2023-12-24 18:27:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:27:26,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 115 [2023-12-24 18:27:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:27:26,938 INFO L225 Difference]: With dead ends: 747 [2023-12-24 18:27:26,938 INFO L226 Difference]: Without dead ends: 444 [2023-12-24 18:27:26,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:27:26,939 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 151 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:27:26,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 208 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 19.1s Time] [2023-12-24 18:27:26,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-24 18:27:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 318. [2023-12-24 18:27:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 273 states have (on average 1.2197802197802199) internal successors, (333), 275 states have internal predecessors, (333), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:27:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 409 transitions. [2023-12-24 18:27:26,981 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 409 transitions. Word has length 115 [2023-12-24 18:27:26,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:27:26,982 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 409 transitions. [2023-12-24 18:27:26,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:27:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 409 transitions. [2023-12-24 18:27:26,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 18:27:26,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:27:26,983 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:27:26,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 18:27:27,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:27:27,194 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:27:27,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:27:27,194 INFO L85 PathProgramCache]: Analyzing trace with hash -645105763, now seen corresponding path program 1 times [2023-12-24 18:27:27,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:27:27,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353780994] [2023-12-24 18:27:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:27:27,195 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 [2023-12-24 18:27:27,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:27:27,196 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:27:27,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 18:27:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:27:27,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 18:27:27,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:27:27,729 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 14 treesize of output 10 [2023-12-24 18:27:27,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 41 treesize of output 19 [2023-12-24 18:27:28,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 41 treesize of output 19 [2023-12-24 18:27:28,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 41 treesize of output 19 [2023-12-24 18:27:28,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 41 treesize of output 19 [2023-12-24 18:27:28,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 43 treesize of output 30 [2023-12-24 18:27:28,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:28,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 51 [2023-12-24 18:27:28,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:28,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 50 [2023-12-24 18:27:29,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:29,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 37 [2023-12-24 18:27:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 254 proven. 21 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-24 18:27:29,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:27:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:27:29,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:27:29,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353780994] [2023-12-24 18:27:29,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353780994] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:27:29,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:27:29,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-12-24 18:27:29,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775670697] [2023-12-24 18:27:29,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:27:29,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:27:29,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:27:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:27:29,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-12-24 18:27:29,698 INFO L87 Difference]: Start difference. First operand 318 states and 409 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:27:30,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:27:30,454 INFO L93 Difference]: Finished difference Result 353 states and 450 transitions. [2023-12-24 18:27:30,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:27:30,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 115 [2023-12-24 18:27:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:27:30,456 INFO L225 Difference]: With dead ends: 353 [2023-12-24 18:27:30,456 INFO L226 Difference]: Without dead ends: 351 [2023-12-24 18:27:30,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 214 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-24 18:27:30,457 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 59 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:27:30,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 279 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 18:27:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-24 18:27:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 293. [2023-12-24 18:27:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 247 states have (on average 1.2024291497975708) internal successors, (297), 249 states have internal predecessors, (297), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:27:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 373 transitions. [2023-12-24 18:27:30,498 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 373 transitions. Word has length 115 [2023-12-24 18:27:30,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:27:30,500 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 373 transitions. [2023-12-24 18:27:30,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:27:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 373 transitions. [2023-12-24 18:27:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 18:27:30,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:27:30,501 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:27:30,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 18:27:30,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:27:30,711 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:27:30,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:27:30,711 INFO L85 PathProgramCache]: Analyzing trace with hash -645046181, now seen corresponding path program 1 times [2023-12-24 18:27:30,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:27:30,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274396987] [2023-12-24 18:27:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:27:30,712 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 [2023-12-24 18:27:30,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:27:30,713 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:27:30,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 18:27:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:27:31,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 18:27:31,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:27:31,026 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 8 treesize of output 1 [2023-12-24 18:27:31,032 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 19 treesize of output 1 [2023-12-24 18:27:31,039 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 14 treesize of output 10 [2023-12-24 18:27:31,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 [2023-12-24 18:27:31,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:31,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:27:31,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:31,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:27:31,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:31,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:27:31,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:31,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 59 [2023-12-24 18:27:32,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:32,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 62 [2023-12-24 18:27:32,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:32,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 71 [2023-12-24 18:27:32,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:32,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 74 [2023-12-24 18:27:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 18:27:32,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:27:32,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:27:32,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274396987] [2023-12-24 18:27:32,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274396987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:27:32,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:27:32,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 18:27:32,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613783794] [2023-12-24 18:27:32,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:27:32,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:27:32,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:27:32,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:27:32,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:27:32,791 INFO L87 Difference]: Start difference. First operand 293 states and 373 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:27:35,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:27:35,776 INFO L93 Difference]: Finished difference Result 802 states and 1015 transitions. [2023-12-24 18:27:35,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 18:27:35,778 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 115 [2023-12-24 18:27:35,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:27:35,779 INFO L225 Difference]: With dead ends: 802 [2023-12-24 18:27:35,779 INFO L226 Difference]: Without dead ends: 526 [2023-12-24 18:27:35,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2023-12-24 18:27:35,780 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 213 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:27:35,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 240 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 18:27:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-24 18:27:35,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 448. [2023-12-24 18:27:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 402 states have (on average 1.2263681592039801) internal successors, (493), 404 states have internal predecessors, (493), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:27:35,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 569 transitions. [2023-12-24 18:27:35,817 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 569 transitions. Word has length 115 [2023-12-24 18:27:35,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:27:35,817 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 569 transitions. [2023-12-24 18:27:35,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:27:35,817 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 569 transitions. [2023-12-24 18:27:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 18:27:35,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:27:35,818 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:27:35,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 18:27:36,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:27:36,029 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:27:36,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:27:36,029 INFO L85 PathProgramCache]: Analyzing trace with hash 787981641, now seen corresponding path program 1 times [2023-12-24 18:27:36,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:27:36,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791869224] [2023-12-24 18:27:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:27:36,030 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 [2023-12-24 18:27:36,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:27:36,031 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:27:36,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 18:27:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:27:36,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 18:27:36,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:27:36,632 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 8 treesize of output 1 [2023-12-24 18:27:36,638 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 19 treesize of output 1 [2023-12-24 18:27:36,645 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 14 treesize of output 10 [2023-12-24 18:27:36,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:27:36,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 [2023-12-24 18:27:37,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:37,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:27:37,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:37,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:27:37,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:37,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:27:37,313 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:37,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 45 [2023-12-24 18:27:37,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:37,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 96 [2023-12-24 18:27:40,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:40,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 120 treesize of output 44 [2023-12-24 18:27:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 18:27:41,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:27:41,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:27:41,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791869224] [2023-12-24 18:27:41,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791869224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:27:41,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:27:41,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 18:27:41,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366041356] [2023-12-24 18:27:41,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:27:41,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 18:27:41,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:27:41,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 18:27:41,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:27:41,370 INFO L87 Difference]: Start difference. First operand 448 states and 569 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:27:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:27:56,284 INFO L93 Difference]: Finished difference Result 965 states and 1222 transitions. [2023-12-24 18:27:56,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:27:56,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2023-12-24 18:27:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:27:56,292 INFO L225 Difference]: With dead ends: 965 [2023-12-24 18:27:56,293 INFO L226 Difference]: Without dead ends: 534 [2023-12-24 18:27:56,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-12-24 18:27:56,294 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 250 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:27:56,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 296 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2023-12-24 18:27:56,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-12-24 18:27:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 456. [2023-12-24 18:27:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 410 states have (on average 1.221951219512195) internal successors, (501), 412 states have internal predecessors, (501), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:27:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 577 transitions. [2023-12-24 18:27:56,331 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 577 transitions. Word has length 116 [2023-12-24 18:27:56,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:27:56,332 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 577 transitions. [2023-12-24 18:27:56,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:27:56,332 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 577 transitions. [2023-12-24 18:27:56,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 18:27:56,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:27:56,333 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:27:56,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 18:27:56,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:27:56,543 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:27:56,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:27:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash 189615113, now seen corresponding path program 1 times [2023-12-24 18:27:56,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:27:56,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595391110] [2023-12-24 18:27:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:27:56,544 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 [2023-12-24 18:27:56,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:27:56,546 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:27:56,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 18:27:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:27:57,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 18:27:57,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:27:57,219 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 8 treesize of output 1 [2023-12-24 18:27:57,227 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 14 treesize of output 10 [2023-12-24 18:27:57,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:27:57,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:27:57,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 [2023-12-24 18:27:57,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:57,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:27:57,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:57,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:27:57,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:57,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:27:57,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:57,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 45 [2023-12-24 18:27:58,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:58,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 91 treesize of output 87 [2023-12-24 18:28:01,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:01,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 120 treesize of output 44 [2023-12-24 18:28:01,824 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 18:28:01,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:28:01,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:28:01,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595391110] [2023-12-24 18:28:01,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595391110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:28:01,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:28:01,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 18:28:01,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912399935] [2023-12-24 18:28:01,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:28:01,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 18:28:01,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:28:01,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 18:28:01,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:28:01,826 INFO L87 Difference]: Start difference. First operand 456 states and 577 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:28:16,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:28:20,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:28:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:28:22,151 INFO L93 Difference]: Finished difference Result 993 states and 1252 transitions. [2023-12-24 18:28:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:28:22,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2023-12-24 18:28:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:28:22,153 INFO L225 Difference]: With dead ends: 993 [2023-12-24 18:28:22,154 INFO L226 Difference]: Without dead ends: 554 [2023-12-24 18:28:22,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-12-24 18:28:22,155 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 253 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 33 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:28:22,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 295 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 551 Invalid, 2 Unknown, 0 Unchecked, 18.7s Time] [2023-12-24 18:28:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-24 18:28:22,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 448. [2023-12-24 18:28:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 402 states have (on average 1.2213930348258706) internal successors, (491), 404 states have internal predecessors, (491), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:28:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 567 transitions. [2023-12-24 18:28:22,198 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 567 transitions. Word has length 116 [2023-12-24 18:28:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:28:22,198 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 567 transitions. [2023-12-24 18:28:22,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:28:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 567 transitions. [2023-12-24 18:28:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 18:28:22,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:28:22,199 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:28:22,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 18:28:22,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:28:22,409 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:28:22,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:28:22,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1602758388, now seen corresponding path program 1 times [2023-12-24 18:28:22,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:28:22,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516436634] [2023-12-24 18:28:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:28:22,410 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 [2023-12-24 18:28:22,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:28:22,411 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:28:22,412 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 (23)] Waiting until timeout for monitored process [2023-12-24 18:28:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:28:22,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 18:28:22,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:28:22,782 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 19 treesize of output 1 [2023-12-24 18:28:22,787 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 14 treesize of output 10 [2023-12-24 18:28:22,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 29 [2023-12-24 18:28:23,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:23,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:28:23,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:23,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:28:23,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:23,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 18:28:23,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:23,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:28:24,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:24,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 64 [2023-12-24 18:28:24,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:24,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 82 [2023-12-24 18:28:25,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:25,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 86 [2023-12-24 18:28:25,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:25,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 41 [2023-12-24 18:28:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 274 proven. 33 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-24 18:28:25,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:28:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:28:26,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:28:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516436634] [2023-12-24 18:28:26,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516436634] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:28:26,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:28:26,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2023-12-24 18:28:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144461664] [2023-12-24 18:28:26,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:28:26,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:28:26,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:28:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:28:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-12-24 18:28:26,002 INFO L87 Difference]: Start difference. First operand 448 states and 567 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:28:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:28:27,152 INFO L93 Difference]: Finished difference Result 957 states and 1198 transitions. [2023-12-24 18:28:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:28:27,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2023-12-24 18:28:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:28:27,154 INFO L225 Difference]: With dead ends: 957 [2023-12-24 18:28:27,154 INFO L226 Difference]: Without dead ends: 526 [2023-12-24 18:28:27,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2023-12-24 18:28:27,156 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 235 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:28:27,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 374 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 18:28:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-24 18:28:27,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 464. [2023-12-24 18:28:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 418 states have (on average 1.222488038277512) internal successors, (511), 420 states have internal predecessors, (511), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:28:27,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 587 transitions. [2023-12-24 18:28:27,195 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 587 transitions. Word has length 116 [2023-12-24 18:28:27,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:28:27,196 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 587 transitions. [2023-12-24 18:28:27,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:28:27,196 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 587 transitions. [2023-12-24 18:28:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 18:28:27,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:28:27,197 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:28:27,207 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 (23)] Forceful destruction successful, exit code 0 [2023-12-24 18:28:27,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:28:27,406 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:28:27,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:28:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash 745596536, now seen corresponding path program 1 times [2023-12-24 18:28:27,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:28:27,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765919855] [2023-12-24 18:28:27,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:28:27,407 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 [2023-12-24 18:28:27,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:28:27,408 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:28:27,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 18:28:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:28:27,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 18:28:27,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:28:27,729 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 8 treesize of output 1 [2023-12-24 18:28:27,732 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 19 treesize of output 1 [2023-12-24 18:28:27,735 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 14 treesize of output 10 [2023-12-24 18:28:27,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:28:27,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:28:27,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:28:27,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:28:28,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:28,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 38 [2023-12-24 18:28:28,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:28,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 47 [2023-12-24 18:28:28,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:28,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 50 [2023-12-24 18:28:28,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:28,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 23 [2023-12-24 18:28:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-12-24 18:28:28,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:28:28,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:28:28,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765919855] [2023-12-24 18:28:28,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765919855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:28:28,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:28:28,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 18:28:28,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847915732] [2023-12-24 18:28:28,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:28:28,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:28:28,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:28:28,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:28:28,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:28:28,396 INFO L87 Difference]: Start difference. First operand 464 states and 587 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:28:30,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:28:30,367 INFO L93 Difference]: Finished difference Result 952 states and 1193 transitions. [2023-12-24 18:28:30,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:28:30,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2023-12-24 18:28:30,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:28:30,371 INFO L225 Difference]: With dead ends: 952 [2023-12-24 18:28:30,371 INFO L226 Difference]: Without dead ends: 505 [2023-12-24 18:28:30,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:28:30,373 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 148 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:28:30,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 206 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 18:28:30,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-12-24 18:28:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 439. [2023-12-24 18:28:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 393 states have (on average 1.2111959287531806) internal successors, (476), 395 states have internal predecessors, (476), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:28:30,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 552 transitions. [2023-12-24 18:28:30,423 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 552 transitions. Word has length 116 [2023-12-24 18:28:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:28:30,424 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 552 transitions. [2023-12-24 18:28:30,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:28:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 552 transitions. [2023-12-24 18:28:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 18:28:30,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:28:30,425 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:28:30,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 18:28:30,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:28:30,635 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:28:30,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:28:30,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1609897934, now seen corresponding path program 1 times [2023-12-24 18:28:30,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:28:30,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388946153] [2023-12-24 18:28:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:28:30,636 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 [2023-12-24 18:28:30,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:28:30,637 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-24 18:28:30,638 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 (25)] Waiting until timeout for monitored process [2023-12-24 18:28:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:28:31,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 18:28:31,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:28:31,412 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 8 treesize of output 1 [2023-12-24 18:28:31,417 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 14 treesize of output 10 [2023-12-24 18:28:31,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 [2023-12-24 18:28:31,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:31,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:28:31,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:31,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 18:28:32,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:32,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:28:32,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:32,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:28:32,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:32,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:28:32,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:32,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2023-12-24 18:28:32,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:32,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 95 treesize of output 91 [2023-12-24 18:28:34,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:28:34,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 45 [2023-12-24 18:28:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-24 18:28:35,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:28:35,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:28:35,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388946153] [2023-12-24 18:28:35,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388946153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:28:35,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:28:35,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 18:28:35,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438637487] [2023-12-24 18:28:35,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:28:35,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:28:35,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:28:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:28:35,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:28:35,313 INFO L87 Difference]: Start difference. First operand 439 states and 552 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-24 18:28:39,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:28:50,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:28:56,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:29:01,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:29:10,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:29:18,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:29:23,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:29:24,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:29:24,131 INFO L93 Difference]: Finished difference Result 924 states and 1156 transitions. [2023-12-24 18:29:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:29:24,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 117 [2023-12-24 18:29:24,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:29:24,155 INFO L225 Difference]: With dead ends: 924 [2023-12-24 18:29:24,155 INFO L226 Difference]: Without dead ends: 502 [2023-12-24 18:29:24,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-24 18:29:24,156 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 368 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 82 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:29:24,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 163 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 299 Invalid, 2 Unknown, 0 Unchecked, 47.3s Time] [2023-12-24 18:29:24,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-12-24 18:29:24,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 439. [2023-12-24 18:29:24,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 393 states have (on average 1.2061068702290076) internal successors, (474), 395 states have internal predecessors, (474), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:29:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 550 transitions. [2023-12-24 18:29:24,193 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 550 transitions. Word has length 117 [2023-12-24 18:29:24,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:29:24,193 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 550 transitions. [2023-12-24 18:29:24,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-24 18:29:24,193 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 550 transitions. [2023-12-24 18:29:24,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 18:29:24,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:29:24,194 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:29:24,206 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 (25)] Forceful destruction successful, exit code 0 [2023-12-24 18:29:24,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:29:24,404 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:29:24,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:29:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1652449594, now seen corresponding path program 1 times [2023-12-24 18:29:24,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:29:24,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919638015] [2023-12-24 18:29:24,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:29:24,405 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 [2023-12-24 18:29:24,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:29:24,406 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:29:24,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 18:29:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:29:24,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 18:29:24,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:29:24,810 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 14 treesize of output 10 [2023-12-24 18:29:25,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 41 treesize of output 19 [2023-12-24 18:29:25,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 29 [2023-12-24 18:29:26,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:26,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2023-12-24 18:29:26,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:26,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2023-12-24 18:29:26,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:26,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2023-12-24 18:29:26,937 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:26,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2023-12-24 18:29:27,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:27,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 65 [2023-12-24 18:29:27,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:27,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 115 treesize of output 51 [2023-12-24 18:29:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 302 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-24 18:29:28,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:29:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:29:29,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:29:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919638015] [2023-12-24 18:29:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919638015] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:29:29,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:29:29,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 17 [2023-12-24 18:29:29,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115704086] [2023-12-24 18:29:29,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:29:29,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:29:29,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:29:29,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:29:29,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-24 18:29:29,098 INFO L87 Difference]: Start difference. First operand 439 states and 550 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:29:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:29:31,212 INFO L93 Difference]: Finished difference Result 1053 states and 1324 transitions. [2023-12-24 18:29:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:29:31,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2023-12-24 18:29:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:29:31,215 INFO L225 Difference]: With dead ends: 1053 [2023-12-24 18:29:31,215 INFO L226 Difference]: Without dead ends: 631 [2023-12-24 18:29:31,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-12-24 18:29:31,216 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 113 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:29:31,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 654 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 18:29:31,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-12-24 18:29:31,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 463. [2023-12-24 18:29:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 417 states have (on average 1.223021582733813) internal successors, (510), 419 states have internal predecessors, (510), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:29:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 586 transitions. [2023-12-24 18:29:31,264 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 586 transitions. Word has length 117 [2023-12-24 18:29:31,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:29:31,264 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 586 transitions. [2023-12-24 18:29:31,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:29:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 586 transitions. [2023-12-24 18:29:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 18:29:31,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:29:31,265 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:29:31,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 18:29:31,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:29:31,474 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:29:31,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:29:31,475 INFO L85 PathProgramCache]: Analyzing trace with hash 992482225, now seen corresponding path program 1 times [2023-12-24 18:29:31,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:29:31,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393235985] [2023-12-24 18:29:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:29:31,475 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 [2023-12-24 18:29:31,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:29:31,477 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-12-24 18:29:31,510 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 (27)] Waiting until timeout for monitored process [2023-12-24 18:29:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:29:32,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 18:29:32,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:29:32,165 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 8 treesize of output 1 [2023-12-24 18:29:32,177 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 19 treesize of output 1 [2023-12-24 18:29:32,196 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 19 treesize of output 1 [2023-12-24 18:29:32,207 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 19 treesize of output 1 [2023-12-24 18:29:32,218 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 19 treesize of output 1 [2023-12-24 18:29:32,229 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 19 treesize of output 1 [2023-12-24 18:29:32,241 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 19 treesize of output 1 [2023-12-24 18:29:32,269 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 19 treesize of output 1 [2023-12-24 18:29:32,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:32,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 18:29:34,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:34,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 87 [2023-12-24 18:29:36,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:36,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 113 treesize of output 43 [2023-12-24 18:29:37,326 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:29:37,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:29:37,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:29:37,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393235985] [2023-12-24 18:29:37,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393235985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:29:37,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:29:37,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 18:29:37,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699582355] [2023-12-24 18:29:37,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:29:37,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:29:37,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:29:37,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:29:37,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:29:37,328 INFO L87 Difference]: Start difference. First operand 463 states and 586 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:29:43,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:29:47,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:29:57,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:29:57,053 INFO L93 Difference]: Finished difference Result 1017 states and 1281 transitions. [2023-12-24 18:29:57,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:29:57,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 119 [2023-12-24 18:29:57,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:29:57,056 INFO L225 Difference]: With dead ends: 1017 [2023-12-24 18:29:57,056 INFO L226 Difference]: Without dead ends: 571 [2023-12-24 18:29:57,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-24 18:29:57,057 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 178 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:29:57,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 549 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 18.6s Time] [2023-12-24 18:29:57,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-12-24 18:29:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 471. [2023-12-24 18:29:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 425 states have (on average 1.2188235294117646) internal successors, (518), 427 states have internal predecessors, (518), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:29:57,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 594 transitions. [2023-12-24 18:29:57,106 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 594 transitions. Word has length 119 [2023-12-24 18:29:57,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:29:57,106 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 594 transitions. [2023-12-24 18:29:57,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:29:57,106 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 594 transitions. [2023-12-24 18:29:57,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 18:29:57,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:29:57,107 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:29:57,117 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 (27)] Forceful destruction successful, exit code 0 [2023-12-24 18:29:57,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:29:57,317 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:29:57,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:29:57,317 INFO L85 PathProgramCache]: Analyzing trace with hash 271662705, now seen corresponding path program 1 times [2023-12-24 18:29:57,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:29:57,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398339959] [2023-12-24 18:29:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:29:57,318 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 [2023-12-24 18:29:57,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:29:57,319 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:29:57,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 18:29:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:29:57,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 18:29:57,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:29:57,828 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 8 treesize of output 1 [2023-12-24 18:29:57,843 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 19 treesize of output 1 [2023-12-24 18:29:57,857 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 14 treesize of output 10 [2023-12-24 18:29:58,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:29:58,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 [2023-12-24 18:29:58,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:58,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:29:59,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:59,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:29:59,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:59,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:29:59,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:29:59,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2023-12-24 18:30:02,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:30:02,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 84 treesize of output 101 [2023-12-24 18:30:07,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:30:07,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 52 [2023-12-24 18:30:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 18:30:08,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:30:08,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:30:08,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398339959] [2023-12-24 18:30:08,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398339959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:30:08,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:30:08,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 18:30:08,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574274491] [2023-12-24 18:30:08,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:30:08,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 18:30:08,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:30:08,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 18:30:08,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-24 18:30:08,092 INFO L87 Difference]: Start difference. First operand 471 states and 594 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:30:17,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:30:21,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:30:35,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:30:40,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:30:44,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:30:47,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:30:47,351 INFO L93 Difference]: Finished difference Result 1043 states and 1310 transitions. [2023-12-24 18:30:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 18:30:47,352 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 119 [2023-12-24 18:30:47,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:30:47,354 INFO L225 Difference]: With dead ends: 1043 [2023-12-24 18:30:47,354 INFO L226 Difference]: Without dead ends: 589 [2023-12-24 18:30:47,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-24 18:30:47,355 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 273 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 37 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:30:47,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 366 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 636 Invalid, 5 Unknown, 0 Unchecked, 37.1s Time] [2023-12-24 18:30:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-12-24 18:30:47,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 463. [2023-12-24 18:30:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 417 states have (on average 1.2182254196642686) internal successors, (508), 419 states have internal predecessors, (508), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:30:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 584 transitions. [2023-12-24 18:30:47,413 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 584 transitions. Word has length 119 [2023-12-24 18:30:47,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:30:47,414 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 584 transitions. [2023-12-24 18:30:47,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:30:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 584 transitions. [2023-12-24 18:30:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 18:30:47,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:30:47,415 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:30:47,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-24 18:30:47,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:30:47,625 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:30:47,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:30:47,626 INFO L85 PathProgramCache]: Analyzing trace with hash -247291444, now seen corresponding path program 1 times [2023-12-24 18:30:47,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:30:47,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159437248] [2023-12-24 18:30:47,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:30:47,626 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 [2023-12-24 18:30:47,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:30:47,629 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-12-24 18:30:47,667 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 (29)] Waiting until timeout for monitored process [2023-12-24 18:30:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:30:48,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 18:30:48,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:30:48,080 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 8 treesize of output 1 [2023-12-24 18:30:48,097 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 19 treesize of output 1 [2023-12-24 18:30:48,125 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 19 treesize of output 1 [2023-12-24 18:30:48,141 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 19 treesize of output 1 [2023-12-24 18:30:48,158 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 19 treesize of output 1 [2023-12-24 18:30:48,174 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 19 treesize of output 1 [2023-12-24 18:30:48,190 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 19 treesize of output 1 [2023-12-24 18:30:48,206 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 19 treesize of output 1 [2023-12-24 18:30:48,222 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 [2023-12-24 18:30:50,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:30:50,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 74 [2023-12-24 18:30:51,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:30:51,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 97 treesize of output 39 [2023-12-24 18:30:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:30:52,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:30:52,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:30:52,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159437248] [2023-12-24 18:30:52,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159437248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:30:52,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:30:52,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 18:30:52,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823682523] [2023-12-24 18:30:52,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:30:52,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:30:52,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:30:52,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:30:52,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:30:52,446 INFO L87 Difference]: Start difference. First operand 463 states and 584 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:30:56,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:31:00,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:31:13,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:31:17,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:31:29,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:29,096 INFO L93 Difference]: Finished difference Result 1028 states and 1290 transitions. [2023-12-24 18:31:29,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:31:29,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 120 [2023-12-24 18:31:29,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:29,114 INFO L225 Difference]: With dead ends: 1028 [2023-12-24 18:31:29,114 INFO L226 Difference]: Without dead ends: 582 [2023-12-24 18:31:29,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:31:29,116 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 145 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:31:29,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 231 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 429 Invalid, 4 Unknown, 0 Unchecked, 34.9s Time] [2023-12-24 18:31:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-12-24 18:31:29,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 463. [2023-12-24 18:31:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 417 states have (on average 1.20863309352518) internal successors, (504), 419 states have internal predecessors, (504), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:31:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 580 transitions. [2023-12-24 18:31:29,164 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 580 transitions. Word has length 120 [2023-12-24 18:31:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:29,164 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 580 transitions. [2023-12-24 18:31:29,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:31:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 580 transitions. [2023-12-24 18:31:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 18:31:29,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:29,166 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:31:29,179 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 (29)] Forceful destruction successful, exit code 0 [2023-12-24 18:31:29,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:31:29,376 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:29,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:29,377 INFO L85 PathProgramCache]: Analyzing trace with hash -492513608, now seen corresponding path program 1 times [2023-12-24 18:31:29,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:29,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302015946] [2023-12-24 18:31:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:29,377 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 [2023-12-24 18:31:29,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:29,378 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:31:29,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 18:31:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:30,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 18:31:30,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:30,073 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 8 treesize of output 1 [2023-12-24 18:31:30,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:31:30,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:31:30,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:31:30,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:31:30,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2023-12-24 18:31:31,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:31:31,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 114 treesize of output 86 [2023-12-24 18:31:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 134 proven. 6 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-24 18:31:33,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:31:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:31:37,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:31:37,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302015946] [2023-12-24 18:31:37,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302015946] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:31:37,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:31:37,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 20 [2023-12-24 18:31:37,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741579656] [2023-12-24 18:31:37,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:31:37,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 18:31:37,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:31:37,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 18:31:37,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-12-24 18:31:37,685 INFO L87 Difference]: Start difference. First operand 463 states and 580 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:31:45,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-24 18:31:53,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-24 18:31:57,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:31:57,194 INFO L93 Difference]: Finished difference Result 1005 states and 1252 transitions. [2023-12-24 18:31:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 18:31:57,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-24 18:31:57,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:31:57,202 INFO L225 Difference]: With dead ends: 1005 [2023-12-24 18:31:57,202 INFO L226 Difference]: Without dead ends: 559 [2023-12-24 18:31:57,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-12-24 18:31:57,204 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 63 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:31:57,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 494 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 368 Invalid, 2 Unknown, 0 Unchecked, 18.2s Time] [2023-12-24 18:31:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-12-24 18:31:57,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 469. [2023-12-24 18:31:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 423 states have (on average 1.1914893617021276) internal successors, (504), 425 states have internal predecessors, (504), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:31:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 580 transitions. [2023-12-24 18:31:57,263 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 580 transitions. Word has length 122 [2023-12-24 18:31:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:31:57,263 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 580 transitions. [2023-12-24 18:31:57,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:31:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 580 transitions. [2023-12-24 18:31:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 18:31:57,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:31:57,264 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:31:57,279 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 (30)] Ended with exit code 0 [2023-12-24 18:31:57,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:31:57,475 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:31:57,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:31:57,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1025661358, now seen corresponding path program 1 times [2023-12-24 18:31:57,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:31:57,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408015644] [2023-12-24 18:31:57,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:31:57,475 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 [2023-12-24 18:31:57,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:31:57,476 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-12-24 18:31:57,477 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 (31)] Waiting until timeout for monitored process [2023-12-24 18:31:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:31:58,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 18:31:58,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:31:58,121 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 8 treesize of output 1 [2023-12-24 18:31:58,136 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 19 treesize of output 1 [2023-12-24 18:31:58,152 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 19 treesize of output 1 [2023-12-24 18:31:58,168 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 19 treesize of output 1 [2023-12-24 18:31:58,184 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 19 treesize of output 1 [2023-12-24 18:31:58,200 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 19 treesize of output 1 [2023-12-24 18:31:58,215 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 19 treesize of output 1 [2023-12-24 18:31:58,230 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 19 treesize of output 1 [2023-12-24 18:31:58,247 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 19 treesize of output 1 [2023-12-24 18:31:58,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:31:58,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 18:31:59,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:31:59,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 63 [2023-12-24 18:32:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:32:00,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:32:00,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:32:00,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408015644] [2023-12-24 18:32:00,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408015644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:32:00,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:32:00,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 18:32:00,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140891717] [2023-12-24 18:32:00,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:32:00,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 18:32:00,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:32:00,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 18:32:00,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-24 18:32:00,913 INFO L87 Difference]: Start difference. First operand 469 states and 580 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:32:08,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:32:08,468 INFO L93 Difference]: Finished difference Result 1075 states and 1317 transitions. [2023-12-24 18:32:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 18:32:08,469 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-24 18:32:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:32:08,471 INFO L225 Difference]: With dead ends: 1075 [2023-12-24 18:32:08,471 INFO L226 Difference]: Without dead ends: 623 [2023-12-24 18:32:08,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-12-24 18:32:08,472 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 251 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:32:08,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 597 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-24 18:32:08,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-12-24 18:32:08,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 481. [2023-12-24 18:32:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 435 states have (on average 1.1908045977011494) internal successors, (518), 437 states have internal predecessors, (518), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:32:08,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 594 transitions. [2023-12-24 18:32:08,527 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 594 transitions. Word has length 122 [2023-12-24 18:32:08,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:32:08,528 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 594 transitions. [2023-12-24 18:32:08,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:32:08,528 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 594 transitions. [2023-12-24 18:32:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 18:32:08,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:32:08,529 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:32:08,538 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 (31)] Forceful destruction successful, exit code 0 [2023-12-24 18:32:08,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:32:08,736 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:32:08,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:32:08,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1726725936, now seen corresponding path program 1 times [2023-12-24 18:32:08,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:32:08,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970473525] [2023-12-24 18:32:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:32:08,737 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 [2023-12-24 18:32:08,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:32:08,738 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-12-24 18:32:08,738 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 (32)] Waiting until timeout for monitored process [2023-12-24 18:32:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:32:09,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 18:32:09,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:32:09,066 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 8 treesize of output 1 [2023-12-24 18:32:09,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:32:09,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:32:09,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:32:09,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:32:09,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2023-12-24 18:32:10,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:32:10,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 55 [2023-12-24 18:32:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 134 proven. 6 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-24 18:32:10,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:32:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:32:11,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:32:11,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970473525] [2023-12-24 18:32:11,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970473525] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:32:11,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:32:11,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-12-24 18:32:11,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752895669] [2023-12-24 18:32:11,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:32:11,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:32:11,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:32:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:32:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-24 18:32:11,211 INFO L87 Difference]: Start difference. First operand 481 states and 594 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:32:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:32:12,302 INFO L93 Difference]: Finished difference Result 1088 states and 1339 transitions. [2023-12-24 18:32:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:32:12,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-24 18:32:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:32:12,304 INFO L225 Difference]: With dead ends: 1088 [2023-12-24 18:32:12,305 INFO L226 Difference]: Without dead ends: 624 [2023-12-24 18:32:12,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-24 18:32:12,305 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 126 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:32:12,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 235 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 18:32:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2023-12-24 18:32:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 571. [2023-12-24 18:32:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 495 states have (on average 1.1575757575757575) internal successors, (573), 500 states have internal predecessors, (573), 62 states have call successors, (62), 13 states have call predecessors, (62), 13 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:32:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 697 transitions. [2023-12-24 18:32:12,395 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 697 transitions. Word has length 122 [2023-12-24 18:32:12,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:32:12,395 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 697 transitions. [2023-12-24 18:32:12,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:32:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 697 transitions. [2023-12-24 18:32:12,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 18:32:12,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:32:12,396 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:32:12,405 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 (32)] Forceful destruction successful, exit code 0 [2023-12-24 18:32:12,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:32:12,605 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:32:12,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:32:12,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1927821038, now seen corresponding path program 1 times [2023-12-24 18:32:12,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:32:12,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017868461] [2023-12-24 18:32:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:32:12,606 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 [2023-12-24 18:32:12,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:32:12,607 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-12-24 18:32:12,608 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 (33)] Waiting until timeout for monitored process [2023-12-24 18:32:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:32:12,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 18:32:12,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:32:12,982 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 19 treesize of output 1 [2023-12-24 18:32:12,995 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 19 treesize of output 1 [2023-12-24 18:32:13,008 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 14 treesize of output 10 [2023-12-24 18:32:13,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:32:13,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:32:13,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:32:13,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:32:13,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 14 [2023-12-24 18:32:13,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:32:14,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:32:14,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 45 [2023-12-24 18:32:15,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:32:15,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 85 [2023-12-24 18:32:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-12-24 18:32:16,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:32:16,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:32:16,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017868461] [2023-12-24 18:32:16,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017868461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:32:16,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:32:16,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 18:32:16,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174491346] [2023-12-24 18:32:16,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:32:16,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 18:32:16,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:32:16,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 18:32:16,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-24 18:32:16,838 INFO L87 Difference]: Start difference. First operand 571 states and 697 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:32:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:32:27,599 INFO L93 Difference]: Finished difference Result 1271 states and 1541 transitions. [2023-12-24 18:32:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 18:32:27,600 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2023-12-24 18:32:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:32:27,602 INFO L225 Difference]: With dead ends: 1271 [2023-12-24 18:32:27,602 INFO L226 Difference]: Without dead ends: 717 [2023-12-24 18:32:27,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2023-12-24 18:32:27,603 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 345 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:32:27,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 525 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-12-24 18:32:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-12-24 18:32:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 559. [2023-12-24 18:32:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 483 states have (on average 1.1573498964803313) internal successors, (559), 488 states have internal predecessors, (559), 62 states have call successors, (62), 13 states have call predecessors, (62), 13 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:32:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 683 transitions. [2023-12-24 18:32:27,670 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 683 transitions. Word has length 122 [2023-12-24 18:32:27,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:32:27,670 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 683 transitions. [2023-12-24 18:32:27,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:32:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 683 transitions. [2023-12-24 18:32:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 18:32:27,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:32:27,671 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:32:27,678 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 (33)] Forceful destruction successful, exit code 0 [2023-12-24 18:32:27,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:32:27,871 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:32:27,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:32:27,872 INFO L85 PathProgramCache]: Analyzing trace with hash -647933517, now seen corresponding path program 1 times [2023-12-24 18:32:27,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:32:27,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622981855] [2023-12-24 18:32:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:32:27,872 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 [2023-12-24 18:32:27,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:32:27,873 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-12-24 18:32:27,874 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 (34)] Waiting until timeout for monitored process [2023-12-24 18:32:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:32:28,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 18:32:28,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:32:28,290 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 8 treesize of output 1 [2023-12-24 18:32:28,302 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 19 treesize of output 1 [2023-12-24 18:32:28,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:32:28,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 26 treesize of output 25 [2023-12-24 18:32:29,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:32:29,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 18:32:29,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:32:29,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 18:32:29,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:32:29,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 18:32:30,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:32:30,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 18:32:30,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:32:30,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 18:32:30,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:32:30,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 55 [2023-12-24 18:32:39,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:32:39,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 139 treesize of output 120 [2023-12-24 18:32:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 224 proven. 33 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-12-24 18:32:48,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:32:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:32:55,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:32:55,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622981855] [2023-12-24 18:32:55,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622981855] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:32:55,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:32:55,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 23 [2023-12-24 18:32:55,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6112926] [2023-12-24 18:32:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:32:55,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:32:55,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:32:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:32:55,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2023-12-24 18:32:55,478 INFO L87 Difference]: Start difference. First operand 559 states and 683 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:33:03,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:33:07,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:33:11,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:33:15,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:33:21,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:33:25,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:33:29,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:33:29,968 INFO L93 Difference]: Finished difference Result 1346 states and 1632 transitions. [2023-12-24 18:33:29,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:33:29,975 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 123 [2023-12-24 18:33:29,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:33:29,977 INFO L225 Difference]: With dead ends: 1346 [2023-12-24 18:33:29,977 INFO L226 Difference]: Without dead ends: 804 [2023-12-24 18:33:29,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2023-12-24 18:33:29,978 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 145 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:33:29,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 442 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 321 Invalid, 6 Unknown, 0 Unchecked, 33.0s Time] [2023-12-24 18:33:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2023-12-24 18:33:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 611. [2023-12-24 18:33:30,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 535 states have (on average 1.1495327102803738) internal successors, (615), 540 states have internal predecessors, (615), 62 states have call successors, (62), 13 states have call predecessors, (62), 13 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:33:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 739 transitions. [2023-12-24 18:33:30,066 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 739 transitions. Word has length 123 [2023-12-24 18:33:30,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:33:30,066 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 739 transitions. [2023-12-24 18:33:30,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:33:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 739 transitions. [2023-12-24 18:33:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 18:33:30,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:33:30,067 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:33:30,079 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 (34)] Forceful destruction successful, exit code 0 [2023-12-24 18:33:30,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:33:30,277 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:33:30,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:33:30,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1841595445, now seen corresponding path program 1 times [2023-12-24 18:33:30,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:33:30,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686714900] [2023-12-24 18:33:30,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:33:30,277 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 [2023-12-24 18:33:30,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:33:30,278 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-12-24 18:33:30,279 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 (35)] Waiting until timeout for monitored process [2023-12-24 18:33:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:33:30,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 18:33:30,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:33:30,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:33:30,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 14 [2023-12-24 18:33:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:33:30,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:33:30,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:33:30,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686714900] [2023-12-24 18:33:30,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686714900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:33:30,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:33:30,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:33:30,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571543471] [2023-12-24 18:33:30,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:33:30,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:33:30,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:33:30,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:33:30,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:33:30,725 INFO L87 Difference]: Start difference. First operand 611 states and 739 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:33:34,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:33:35,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:33:35,161 INFO L93 Difference]: Finished difference Result 1356 states and 1634 transitions. [2023-12-24 18:33:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:33:35,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 123 [2023-12-24 18:33:35,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:33:35,164 INFO L225 Difference]: With dead ends: 1356 [2023-12-24 18:33:35,164 INFO L226 Difference]: Without dead ends: 762 [2023-12-24 18:33:35,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:33:35,165 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 48 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:33:35,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 350 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-24 18:33:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-12-24 18:33:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 619. [2023-12-24 18:33:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 543 states have (on average 1.139963167587477) internal successors, (619), 548 states have internal predecessors, (619), 62 states have call successors, (62), 13 states have call predecessors, (62), 13 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:33:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 743 transitions. [2023-12-24 18:33:35,237 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 743 transitions. Word has length 123 [2023-12-24 18:33:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:33:35,237 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 743 transitions. [2023-12-24 18:33:35,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:33:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 743 transitions. [2023-12-24 18:33:35,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 18:33:35,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:33:35,239 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:33:35,245 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 (35)] Forceful destruction successful, exit code 0 [2023-12-24 18:33:35,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:33:35,439 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:33:35,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:33:35,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2030670025, now seen corresponding path program 1 times [2023-12-24 18:33:35,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:33:35,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732460313] [2023-12-24 18:33:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:33:35,440 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 [2023-12-24 18:33:35,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:33:35,441 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-12-24 18:33:35,441 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 (36)] Waiting until timeout for monitored process [2023-12-24 18:33:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:33:35,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 18:33:35,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:33:35,761 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 8 treesize of output 1 [2023-12-24 18:33:35,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:33:36,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:33:36,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:33:36,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:33:36,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:33:37,323 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:33:37,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2023-12-24 18:33:37,578 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:33:37,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 60 [2023-12-24 18:33:38,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:33:38,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 78 [2023-12-24 18:33:38,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:33:38,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 34 [2023-12-24 18:33:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 219 proven. 33 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-24 18:33:39,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:33:40,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:33:40,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732460313] [2023-12-24 18:33:40,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732460313] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:33:40,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [627329719] [2023-12-24 18:33:40,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:33:40,144 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 18:33:40,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 18:33:40,146 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 18:33:40,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-12-24 18:33:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:33:40,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 18:33:40,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:33:42,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:33:42,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2023-12-24 18:33:43,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:33:43,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 40 [2023-12-24 18:33:43,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:33:43,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 49 [2023-12-24 18:33:43,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:33:43,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 20 [2023-12-24 18:33:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 92 proven. 3 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-24 18:33:43,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:33:44,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [627329719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:33:44,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:33:44,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 23 [2023-12-24 18:33:44,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312024708] [2023-12-24 18:33:44,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:33:44,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 18:33:44,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:33:44,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 18:33:44,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2023-12-24 18:33:44,248 INFO L87 Difference]: Start difference. First operand 619 states and 743 transitions. Second operand has 23 states, 20 states have (on average 4.9) internal successors, (98), 23 states have internal predecessors, (98), 8 states have call successors, (30), 5 states have call predecessors, (30), 8 states have return successors, (30), 5 states have call predecessors, (30), 8 states have call successors, (30) [2023-12-24 18:33:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:33:59,405 INFO L93 Difference]: Finished difference Result 1318 states and 1554 transitions. [2023-12-24 18:33:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 18:33:59,407 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.9) internal successors, (98), 23 states have internal predecessors, (98), 8 states have call successors, (30), 5 states have call predecessors, (30), 8 states have return successors, (30), 5 states have call predecessors, (30), 8 states have call successors, (30) Word has length 123 [2023-12-24 18:33:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:33:59,409 INFO L225 Difference]: With dead ends: 1318 [2023-12-24 18:33:59,409 INFO L226 Difference]: Without dead ends: 716 [2023-12-24 18:33:59,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=398, Invalid=1954, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 18:33:59,411 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 548 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:33:59,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 553 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-12-24 18:33:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2023-12-24 18:33:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 617. [2023-12-24 18:33:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 534 states have (on average 1.1310861423220975) internal successors, (604), 539 states have internal predecessors, (604), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:33:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 728 transitions. [2023-12-24 18:33:59,496 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 728 transitions. Word has length 123 [2023-12-24 18:33:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:33:59,496 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 728 transitions. [2023-12-24 18:33:59,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.9) internal successors, (98), 23 states have internal predecessors, (98), 8 states have call successors, (30), 5 states have call predecessors, (30), 8 states have return successors, (30), 5 states have call predecessors, (30), 8 states have call successors, (30) [2023-12-24 18:33:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 728 transitions. [2023-12-24 18:33:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 18:33:59,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:33:59,497 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:33:59,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2023-12-24 18:33:59,705 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 (36)] Forceful destruction successful, exit code 0 [2023-12-24 18:33:59,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:33:59,898 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:33:59,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:33:59,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1329070151, now seen corresponding path program 1 times [2023-12-24 18:33:59,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:33:59,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246515185] [2023-12-24 18:33:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:33:59,899 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 [2023-12-24 18:33:59,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:33:59,900 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-12-24 18:33:59,901 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 (38)] Waiting until timeout for monitored process [2023-12-24 18:34:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:34:00,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 18:34:00,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:34:00,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 treesize of output 23 [2023-12-24 18:34:00,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:00,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2023-12-24 18:34:01,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:01,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 18:34:02,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:02,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 18:34:03,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:03,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 18:34:04,154 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:04,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 18:34:04,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:04,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 18:34:05,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:05,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 18:34:06,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:06,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 62 [2023-12-24 18:34:08,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:08,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 95 [2023-12-24 18:34:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 162 proven. 33 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-24 18:34:12,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:34:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:34:17,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:34:17,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246515185] [2023-12-24 18:34:17,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246515185] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:34:17,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:34:17,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 24 [2023-12-24 18:34:17,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783854300] [2023-12-24 18:34:17,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:34:17,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 18:34:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:34:17,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 18:34:17,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2023-12-24 18:34:17,271 INFO L87 Difference]: Start difference. First operand 617 states and 728 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:34:23,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:34:27,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:34:33,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:34:37,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:34:37,201 INFO L93 Difference]: Finished difference Result 1318 states and 1549 transitions. [2023-12-24 18:34:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:34:37,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 123 [2023-12-24 18:34:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:34:37,211 INFO L225 Difference]: With dead ends: 1318 [2023-12-24 18:34:37,211 INFO L226 Difference]: Without dead ends: 722 [2023-12-24 18:34:37,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 218 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2023-12-24 18:34:37,212 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 137 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:34:37,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 390 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 3 Unknown, 0 Unchecked, 18.9s Time] [2023-12-24 18:34:37,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-12-24 18:34:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 595. [2023-12-24 18:34:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 512 states have (on average 1.1328125) internal successors, (580), 517 states have internal predecessors, (580), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:34:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 704 transitions. [2023-12-24 18:34:37,289 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 704 transitions. Word has length 123 [2023-12-24 18:34:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:34:37,289 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 704 transitions. [2023-12-24 18:34:37,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:34:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 704 transitions. [2023-12-24 18:34:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 18:34:37,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:34:37,290 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:34:37,297 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 (38)] Forceful destruction successful, exit code 0 [2023-12-24 18:34:37,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:34:37,490 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:34:37,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:34:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash 766379716, now seen corresponding path program 1 times [2023-12-24 18:34:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:34:37,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858646186] [2023-12-24 18:34:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:34:37,491 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 [2023-12-24 18:34:37,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:34:37,492 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-12-24 18:34:37,493 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 (39)] Waiting until timeout for monitored process [2023-12-24 18:34:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:34:38,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 18:34:38,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:34:38,176 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 8 treesize of output 1 [2023-12-24 18:34:38,188 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 14 treesize of output 10 [2023-12-24 18:34:38,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 [2023-12-24 18:34:38,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:38,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:34:39,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:39,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:34:39,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:39,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:34:39,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:39,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:34:39,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:39,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:34:40,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:40,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 45 [2023-12-24 18:34:40,863 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:40,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 67 treesize of output 81 [2023-12-24 18:34:42,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:34:42,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 102 treesize of output 38 [2023-12-24 18:34:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 18:34:43,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:34:43,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:34:43,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858646186] [2023-12-24 18:34:43,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858646186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:34:43,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:34:43,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-24 18:34:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727046613] [2023-12-24 18:34:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:34:43,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 18:34:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:34:43,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 18:34:43,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-12-24 18:34:43,618 INFO L87 Difference]: Start difference. First operand 595 states and 704 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:34:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:34:54,561 INFO L93 Difference]: Finished difference Result 1324 states and 1558 transitions. [2023-12-24 18:34:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 18:34:54,562 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2023-12-24 18:34:54,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:34:54,564 INFO L225 Difference]: With dead ends: 1324 [2023-12-24 18:34:54,564 INFO L226 Difference]: Without dead ends: 750 [2023-12-24 18:34:54,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 18:34:54,565 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 414 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:34:54,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 513 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-24 18:34:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-12-24 18:34:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 635. [2023-12-24 18:34:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 552 states have (on average 1.1304347826086956) internal successors, (624), 557 states have internal predecessors, (624), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:34:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 748 transitions. [2023-12-24 18:34:54,653 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 748 transitions. Word has length 127 [2023-12-24 18:34:54,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:34:54,653 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 748 transitions. [2023-12-24 18:34:54,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:34:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 748 transitions. [2023-12-24 18:34:54,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 18:34:54,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:34:54,654 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:34:54,666 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 (39)] Ended with exit code 0 [2023-12-24 18:34:54,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:34:54,864 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:34:54,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:34:54,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1024545154, now seen corresponding path program 1 times [2023-12-24 18:34:54,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:34:54,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186280187] [2023-12-24 18:34:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:34:54,865 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 [2023-12-24 18:34:54,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:34:54,866 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-12-24 18:34:54,867 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 (40)] Waiting until timeout for monitored process [2023-12-24 18:34:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:34:55,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:34:55,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:34:55,274 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 20 treesize of output 8 [2023-12-24 18:34:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:34:55,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:34:55,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:34:55,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186280187] [2023-12-24 18:34:55,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186280187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:34:55,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:34:55,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:34:55,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91718594] [2023-12-24 18:34:55,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:34:55,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:34:55,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:34:55,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:34:55,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:34:55,330 INFO L87 Difference]: Start difference. First operand 635 states and 748 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:34:57,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:34:57,436 INFO L93 Difference]: Finished difference Result 1251 states and 1472 transitions. [2023-12-24 18:34:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:34:57,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-12-24 18:34:57,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:34:57,438 INFO L225 Difference]: With dead ends: 1251 [2023-12-24 18:34:57,438 INFO L226 Difference]: Without dead ends: 637 [2023-12-24 18:34:57,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:34:57,440 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 152 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:34:57,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 347 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 18:34:57,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-12-24 18:34:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 635. [2023-12-24 18:34:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 552 states have (on average 1.1231884057971016) internal successors, (620), 557 states have internal predecessors, (620), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:34:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 744 transitions. [2023-12-24 18:34:57,549 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 744 transitions. Word has length 127 [2023-12-24 18:34:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:34:57,549 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 744 transitions. [2023-12-24 18:34:57,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:34:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 744 transitions. [2023-12-24 18:34:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 18:34:57,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:34:57,550 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:34:57,568 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 (40)] Forceful destruction successful, exit code 0 [2023-12-24 18:34:57,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:34:57,760 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:34:57,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:34:57,760 INFO L85 PathProgramCache]: Analyzing trace with hash 828419330, now seen corresponding path program 1 times [2023-12-24 18:34:57,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:34:57,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750354426] [2023-12-24 18:34:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:34:57,760 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 [2023-12-24 18:34:57,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:34:57,761 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2023-12-24 18:34:57,763 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 (41)] Waiting until timeout for monitored process [2023-12-24 18:34:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:34:58,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 18:34:58,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:35:00,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:00,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 29 [2023-12-24 18:35:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:35:01,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:35:01,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:35:01,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750354426] [2023-12-24 18:35:01,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750354426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:35:01,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:35:01,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 18:35:01,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505634414] [2023-12-24 18:35:01,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:35:01,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:35:01,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:35:01,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:35:01,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:35:01,527 INFO L87 Difference]: Start difference. First operand 635 states and 744 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:35:09,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:35:17,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:35:21,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:35:26,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:35:28,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:35:28,111 INFO L93 Difference]: Finished difference Result 1250 states and 1464 transitions. [2023-12-24 18:35:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:35:28,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-12-24 18:35:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:35:28,123 INFO L225 Difference]: With dead ends: 1250 [2023-12-24 18:35:28,123 INFO L226 Difference]: Without dead ends: 636 [2023-12-24 18:35:28,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:35:28,125 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 22 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:35:28,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 405 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 4 Unknown, 0 Unchecked, 24.2s Time] [2023-12-24 18:35:28,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-12-24 18:35:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 630. [2023-12-24 18:35:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 547 states have (on average 1.1096892138939671) internal successors, (607), 552 states have internal predecessors, (607), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:35:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 731 transitions. [2023-12-24 18:35:28,243 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 731 transitions. Word has length 127 [2023-12-24 18:35:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:35:28,244 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 731 transitions. [2023-12-24 18:35:28,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:35:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 731 transitions. [2023-12-24 18:35:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 18:35:28,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:35:28,246 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:35:28,255 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 (41)] Forceful destruction successful, exit code 0 [2023-12-24 18:35:28,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:35:28,455 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:35:28,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:35:28,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1463841156, now seen corresponding path program 1 times [2023-12-24 18:35:28,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:35:28,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489488775] [2023-12-24 18:35:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:35:28,456 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 [2023-12-24 18:35:28,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:35:28,458 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-12-24 18:35:28,495 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 (42)] Waiting until timeout for monitored process [2023-12-24 18:35:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:35:29,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 18:35:29,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:35:29,018 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 8 treesize of output 1 [2023-12-24 18:35:29,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:35:29,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:35:29,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2023-12-24 18:35:29,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 26 treesize of output 25 [2023-12-24 18:35:30,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:30,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 18:35:30,575 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:30,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 18:35:30,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:30,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 18:35:30,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:30,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2023-12-24 18:35:31,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:31,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 73 [2023-12-24 18:35:33,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:33,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 103 treesize of output 39 [2023-12-24 18:35:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 264 proven. 33 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-24 18:35:34,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:35:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:35:37,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:35:37,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489488775] [2023-12-24 18:35:37,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489488775] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:35:37,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:35:37,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [21] total 32 [2023-12-24 18:35:37,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542875005] [2023-12-24 18:35:37,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:35:37,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 18:35:37,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:35:37,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 18:35:37,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2023-12-24 18:35:37,946 INFO L87 Difference]: Start difference. First operand 630 states and 731 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:35:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:35:48,336 INFO L93 Difference]: Finished difference Result 1356 states and 1566 transitions. [2023-12-24 18:35:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 18:35:48,337 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-12-24 18:35:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:35:48,339 INFO L225 Difference]: With dead ends: 1356 [2023-12-24 18:35:48,339 INFO L226 Difference]: Without dead ends: 747 [2023-12-24 18:35:48,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=272, Invalid=1890, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 18:35:48,341 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 216 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:35:48,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1206 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-24 18:35:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-12-24 18:35:48,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 609. [2023-12-24 18:35:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 526 states have (on average 1.102661596958175) internal successors, (580), 531 states have internal predecessors, (580), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:35:48,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 704 transitions. [2023-12-24 18:35:48,417 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 704 transitions. Word has length 127 [2023-12-24 18:35:48,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:35:48,417 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 704 transitions. [2023-12-24 18:35:48,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:35:48,417 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 704 transitions. [2023-12-24 18:35:48,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 18:35:48,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:35:48,418 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:35:48,425 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 (42)] Forceful destruction successful, exit code 0 [2023-12-24 18:35:48,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:35:48,619 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:35:48,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:35:48,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1030600225, now seen corresponding path program 1 times [2023-12-24 18:35:48,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:35:48,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427020271] [2023-12-24 18:35:48,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:35:48,619 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 [2023-12-24 18:35:48,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:35:48,620 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2023-12-24 18:35:48,621 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 (43)] Waiting until timeout for monitored process [2023-12-24 18:35:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:35:48,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 18:35:48,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:35:49,006 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 14 treesize of output 10 [2023-12-24 18:35:49,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 [2023-12-24 18:35:49,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:49,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 18:35:50,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:50,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:35:50,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:50,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2023-12-24 18:35:51,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:51,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2023-12-24 18:35:52,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:52,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2023-12-24 18:35:52,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:52,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2023-12-24 18:35:52,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:52,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2023-12-24 18:35:53,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:53,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 89 [2023-12-24 18:35:55,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:35:55,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 106 treesize of output 42 [2023-12-24 18:35:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-24 18:35:56,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:35:56,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:35:56,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427020271] [2023-12-24 18:35:56,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427020271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:35:56,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:35:56,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-24 18:35:56,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583449985] [2023-12-24 18:35:56,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:35:56,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 18:35:56,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:35:56,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 18:35:56,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-12-24 18:35:56,357 INFO L87 Difference]: Start difference. First operand 609 states and 704 transitions. Second operand has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-12-24 18:36:05,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:36:05,337 INFO L93 Difference]: Finished difference Result 1273 states and 1467 transitions. [2023-12-24 18:36:05,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 18:36:05,339 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 128 [2023-12-24 18:36:05,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:36:05,341 INFO L225 Difference]: With dead ends: 1273 [2023-12-24 18:36:05,341 INFO L226 Difference]: Without dead ends: 685 [2023-12-24 18:36:05,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2023-12-24 18:36:05,342 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 243 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:36:05,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 512 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-24 18:36:05,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-24 18:36:05,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 635. [2023-12-24 18:36:05,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 552 states have (on average 1.1014492753623188) internal successors, (608), 557 states have internal predecessors, (608), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:36:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 732 transitions. [2023-12-24 18:36:05,430 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 732 transitions. Word has length 128 [2023-12-24 18:36:05,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:36:05,430 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 732 transitions. [2023-12-24 18:36:05,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-12-24 18:36:05,431 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 732 transitions. [2023-12-24 18:36:05,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 18:36:05,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:36:05,431 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:36:05,439 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 (43)] Forceful destruction successful, exit code 0 [2023-12-24 18:36:05,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:36:05,632 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:36:05,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:36:05,632 INFO L85 PathProgramCache]: Analyzing trace with hash -772434787, now seen corresponding path program 1 times [2023-12-24 18:36:05,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:36:05,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508036687] [2023-12-24 18:36:05,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:36:05,633 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 [2023-12-24 18:36:05,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:36:05,634 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2023-12-24 18:36:05,636 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 (44)] Waiting until timeout for monitored process [2023-12-24 18:36:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:36:05,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 18:36:05,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:36:06,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:06,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 13 [2023-12-24 18:36:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:36:06,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:36:06,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:36:06,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508036687] [2023-12-24 18:36:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508036687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:36:06,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:36:06,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:36:06,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186183189] [2023-12-24 18:36:06,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:36:06,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:36:06,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:36:06,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:36:06,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:36:06,194 INFO L87 Difference]: Start difference. First operand 635 states and 732 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:36:10,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:36:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:36:11,013 INFO L93 Difference]: Finished difference Result 1374 states and 1578 transitions. [2023-12-24 18:36:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:36:11,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 18:36:11,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:36:11,015 INFO L225 Difference]: With dead ends: 1374 [2023-12-24 18:36:11,015 INFO L226 Difference]: Without dead ends: 760 [2023-12-24 18:36:11,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:36:11,016 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 87 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:36:11,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 343 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-24 18:36:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-12-24 18:36:11,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 643. [2023-12-24 18:36:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 560 states have (on average 1.1) internal successors, (616), 565 states have internal predecessors, (616), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:36:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 740 transitions. [2023-12-24 18:36:11,103 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 740 transitions. Word has length 128 [2023-12-24 18:36:11,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:36:11,104 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 740 transitions. [2023-12-24 18:36:11,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:36:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 740 transitions. [2023-12-24 18:36:11,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 18:36:11,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:36:11,105 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:36:11,112 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 (44)] Forceful destruction successful, exit code 0 [2023-12-24 18:36:11,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:36:11,305 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:36:11,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:36:11,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1783552037, now seen corresponding path program 1 times [2023-12-24 18:36:11,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:36:11,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932944713] [2023-12-24 18:36:11,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:36:11,306 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 [2023-12-24 18:36:11,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:36:11,307 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2023-12-24 18:36:11,308 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 (45)] Waiting until timeout for monitored process [2023-12-24 18:36:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:36:11,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 18:36:11,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:36:11,654 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 19 treesize of output 1 [2023-12-24 18:36:11,665 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 14 treesize of output 10 [2023-12-24 18:36:12,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 29 [2023-12-24 18:36:12,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:12,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 18:36:13,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:13,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:36:14,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:14,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2023-12-24 18:36:15,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:15,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2023-12-24 18:36:16,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:16,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2023-12-24 18:36:16,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:16,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2023-12-24 18:36:16,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:16,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 80 [2023-12-24 18:36:18,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:18,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 112 [2023-12-24 18:36:20,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:20,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 116 treesize of output 52 [2023-12-24 18:36:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 314 proven. 33 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-24 18:36:20,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:36:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:36:21,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:36:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932944713] [2023-12-24 18:36:21,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932944713] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:36:21,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:36:21,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 20 [2023-12-24 18:36:21,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226125215] [2023-12-24 18:36:21,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:36:21,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:36:21,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:36:21,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:36:21,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-12-24 18:36:21,734 INFO L87 Difference]: Start difference. First operand 643 states and 740 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:36:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:36:22,906 INFO L93 Difference]: Finished difference Result 1315 states and 1505 transitions. [2023-12-24 18:36:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:36:22,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 18:36:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:36:22,909 INFO L225 Difference]: With dead ends: 1315 [2023-12-24 18:36:22,909 INFO L226 Difference]: Without dead ends: 693 [2023-12-24 18:36:22,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-12-24 18:36:22,911 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 77 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:36:22,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 272 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 18:36:22,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-24 18:36:23,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 633. [2023-12-24 18:36:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 550 states have (on average 1.089090909090909) internal successors, (599), 555 states have internal predecessors, (599), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:36:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 723 transitions. [2023-12-24 18:36:23,016 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 723 transitions. Word has length 128 [2023-12-24 18:36:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:36:23,016 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 723 transitions. [2023-12-24 18:36:23,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:36:23,016 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 723 transitions. [2023-12-24 18:36:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 18:36:23,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:36:23,017 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:36:23,025 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 (45)] Forceful destruction successful, exit code 0 [2023-12-24 18:36:23,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:36:23,218 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:36:23,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:36:23,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1872400487, now seen corresponding path program 1 times [2023-12-24 18:36:23,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:36:23,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431040423] [2023-12-24 18:36:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:36:23,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:36:23,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:36:23,220 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2023-12-24 18:36:23,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-24 18:36:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:36:23,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 18:36:23,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:36:23,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 29 treesize of output 13 [2023-12-24 18:36:23,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 treesize of output 23 [2023-12-24 18:36:24,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:24,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41 [2023-12-24 18:36:25,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:25,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 54 [2023-12-24 18:36:26,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:26,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 52 [2023-12-24 18:36:27,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:27,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 52 [2023-12-24 18:36:28,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:28,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 52 [2023-12-24 18:36:29,030 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:29,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 52 [2023-12-24 18:36:29,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:29,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 79 [2023-12-24 18:36:31,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:31,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 103 [2023-12-24 18:36:32,811 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:32,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 49 [2023-12-24 18:36:33,048 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 234 proven. 33 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-24 18:36:33,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:36:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:36:33,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:36:33,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431040423] [2023-12-24 18:36:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431040423] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:36:33,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:36:33,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2023-12-24 18:36:33,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415708939] [2023-12-24 18:36:33,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:36:33,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:36:33,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:36:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:36:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2023-12-24 18:36:33,823 INFO L87 Difference]: Start difference. First operand 633 states and 723 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:36:35,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:36:35,188 INFO L93 Difference]: Finished difference Result 1257 states and 1433 transitions. [2023-12-24 18:36:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:36:35,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 18:36:35,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:36:35,192 INFO L225 Difference]: With dead ends: 1257 [2023-12-24 18:36:35,192 INFO L226 Difference]: Without dead ends: 645 [2023-12-24 18:36:35,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-12-24 18:36:35,193 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 47 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:36:35,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 312 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 18:36:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-24 18:36:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 629. [2023-12-24 18:36:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 546 states have (on average 1.0842490842490842) internal successors, (592), 551 states have internal predecessors, (592), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:36:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 716 transitions. [2023-12-24 18:36:35,304 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 716 transitions. Word has length 128 [2023-12-24 18:36:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:36:35,304 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 716 transitions. [2023-12-24 18:36:35,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:36:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 716 transitions. [2023-12-24 18:36:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 18:36:35,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:36:35,306 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:36:35,315 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 (46)] Forceful destruction successful, exit code 0 [2023-12-24 18:36:35,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:36:35,515 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:36:35,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:36:35,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1411449559, now seen corresponding path program 1 times [2023-12-24 18:36:35,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:36:35,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019950135] [2023-12-24 18:36:35,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:36:35,516 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 [2023-12-24 18:36:35,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:36:35,517 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2023-12-24 18:36:35,517 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 (47)] Waiting until timeout for monitored process [2023-12-24 18:36:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:36:35,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 18:36:35,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:36:35,897 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:35,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 14 [2023-12-24 18:36:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:36:35,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:36:35,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:36:35,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019950135] [2023-12-24 18:36:35,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019950135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:36:35,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:36:35,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:36:35,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977675013] [2023-12-24 18:36:35,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:36:35,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:36:35,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:36:35,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:36:35,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:36:35,991 INFO L87 Difference]: Start difference. First operand 629 states and 716 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:36:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:36:37,436 INFO L93 Difference]: Finished difference Result 1235 states and 1403 transitions. [2023-12-24 18:36:37,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:36:37,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 18:36:37,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:36:37,438 INFO L225 Difference]: With dead ends: 1235 [2023-12-24 18:36:37,439 INFO L226 Difference]: Without dead ends: 604 [2023-12-24 18:36:37,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:36:37,439 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 51 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:36:37,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 332 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 18:36:37,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-12-24 18:36:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 596. [2023-12-24 18:36:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 513 states have (on average 1.077972709551657) internal successors, (553), 518 states have internal predecessors, (553), 62 states have call successors, (62), 20 states have call predecessors, (62), 20 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 18:36:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 677 transitions. [2023-12-24 18:36:37,519 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 677 transitions. Word has length 128 [2023-12-24 18:36:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:36:37,519 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 677 transitions. [2023-12-24 18:36:37,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:36:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 677 transitions. [2023-12-24 18:36:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 18:36:37,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:36:37,520 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:36:37,528 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 (47)] Forceful destruction successful, exit code 0 [2023-12-24 18:36:37,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:36:37,728 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:36:37,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:36:37,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1669614997, now seen corresponding path program 1 times [2023-12-24 18:36:37,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:36:37,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527894892] [2023-12-24 18:36:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:36:37,729 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 [2023-12-24 18:36:37,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:36:37,730 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2023-12-24 18:36:37,731 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 (48)] Waiting until timeout for monitored process [2023-12-24 18:36:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:36:38,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 18:36:38,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:36:38,065 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 8 treesize of output 1 [2023-12-24 18:36:38,079 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 14 treesize of output 10 [2023-12-24 18:36:38,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 41 treesize of output 19 [2023-12-24 18:36:38,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 29 [2023-12-24 18:36:39,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:39,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:36:40,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:40,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 18:36:40,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:40,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:36:41,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:41,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:36:42,288 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:42,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 67 [2023-12-24 18:36:44,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:44,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 87 [2023-12-24 18:36:45,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:36:45,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 111 treesize of output 53 [2023-12-24 18:36:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 314 proven. 33 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-24 18:36:47,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:36:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:36:50,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:36:50,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527894892] [2023-12-24 18:36:50,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527894892] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:36:50,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:36:50,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [23] total 32 [2023-12-24 18:36:50,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401847849] [2023-12-24 18:36:50,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:36:50,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 18:36:50,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:36:50,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 18:36:50,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2023-12-24 18:36:50,147 INFO L87 Difference]: Start difference. First operand 596 states and 677 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:36:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:36:55,729 INFO L93 Difference]: Finished difference Result 1169 states and 1326 transitions. [2023-12-24 18:36:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 18:36:55,731 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-24 18:36:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:36:55,731 INFO L225 Difference]: With dead ends: 1169 [2023-12-24 18:36:55,731 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 18:36:55,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=209, Invalid=1431, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 18:36:55,732 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 90 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:36:55,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 927 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-24 18:36:55,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 18:36:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 18:36:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 18:36:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 18:36:55,733 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 128 [2023-12-24 18:36:55,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:36:55,733 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 18:36:55,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:36:55,733 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 18:36:55,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 18:36:55,736 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 18:36:55,750 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 (48)] Forceful destruction successful, exit code 0 [2023-12-24 18:36:55,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:36:55,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 18:40:01,187 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-17-38-6-9-5-8-4-8-4-8-4-8-4-8-4-8-5-8-5-8-5-8-5-7-5-7-5-7-5-7-5-7-5-7-5-7-5-7-5-7-3-7-3-7-3-7-3-7-3-7-2-7-2-4-2-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ∧-100-38-6-9-5-8-4-8-4-8-4-8-4-8-4-8-5-8-5-8-5-7-5-7-5-7-5-7-5-7-5-7-5-7-5-7-5-7-5-7-3-7-3-7-3-7-3-7-3-7-2-4-2-4-2-4-1 context. [2023-12-24 18:40:01,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 18:40:01,194 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 18:40:01,196 INFO L158 Benchmark]: Toolchain (without parser) took 855306.21ms. Allocated memory was 234.9MB in the beginning and 795.9MB in the end (delta: 561.0MB). Free memory was 172.5MB in the beginning and 358.0MB in the end (delta: -185.5MB). Peak memory consumption was 376.8MB. Max. memory is 8.0GB. [2023-12-24 18:40:01,196 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 234.9MB. Free memory was 185.7MB in the beginning and 185.5MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 18:40:01,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.26ms. Allocated memory is still 234.9MB. Free memory was 172.3MB in the beginning and 155.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 18:40:01,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.28ms. Allocated memory is still 234.9MB. Free memory was 155.5MB in the beginning and 151.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 18:40:01,196 INFO L158 Benchmark]: Boogie Preprocessor took 83.54ms. Allocated memory is still 234.9MB. Free memory was 151.8MB in the beginning and 147.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 18:40:01,196 INFO L158 Benchmark]: RCFGBuilder took 834.97ms. Allocated memory was 234.9MB in the beginning and 371.2MB in the end (delta: 136.3MB). Free memory was 147.1MB in the beginning and 304.7MB in the end (delta: -157.5MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2023-12-24 18:40:01,197 INFO L158 Benchmark]: TraceAbstraction took 853978.63ms. Allocated memory was 371.2MB in the beginning and 795.9MB in the end (delta: 424.7MB). Free memory was 304.1MB in the beginning and 358.0MB in the end (delta: -53.9MB). Peak memory consumption was 371.3MB. Max. memory is 8.0GB. [2023-12-24 18:40:01,197 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 234.9MB. Free memory was 185.7MB in the beginning and 185.5MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 337.26ms. Allocated memory is still 234.9MB. Free memory was 172.3MB in the beginning and 155.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.28ms. Allocated memory is still 234.9MB. Free memory was 155.5MB in the beginning and 151.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 83.54ms. Allocated memory is still 234.9MB. Free memory was 151.8MB in the beginning and 147.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 834.97ms. Allocated memory was 234.9MB in the beginning and 371.2MB in the end (delta: 136.3MB). Free memory was 147.1MB in the beginning and 304.7MB in the end (delta: -157.5MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * TraceAbstraction took 853978.63ms. Allocated memory was 371.2MB in the beginning and 795.9MB in the end (delta: 424.7MB). Free memory was 304.1MB in the beginning and 358.0MB in the end (delta: -53.9MB). Peak memory consumption was 371.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-4-37-1 term,while PolyPacSimplificationTermWalker was simplifying 37 xjuncts wrt. a ∧-3-36-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown