/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:26:02,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:26:02,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:26:02,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 14:26:02,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:26:02,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:26:02,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:26:02,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:26:02,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:26:02,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:26:02,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:26:02,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:26:02,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:26:02,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:26:02,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:26:02,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:26:02,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 14:26:02,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:26:02,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:26:02,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:26:02,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:26:02,251 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:26:02,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:26:02,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:26:02,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:26:02,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:26:02,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:26:02,253 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:26:02,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:26:02,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:26:02,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:26:02,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:26:02,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:26:02,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:26:02,255 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:26:02,255 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:26:02,255 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:26:02,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:26:02,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:26:02,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:26:02,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:26:02,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:26:02,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:26:02,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:26:02,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:26:02,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:26:02,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:26:02,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:26:02,256 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:26:02,256 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:26:02,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:26:02,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:26:02,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:26:02,257 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:26:02,258 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:26:02,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:26:02,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:26:02,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:26:02,502 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:26:02,502 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:26:02,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2022-01-10 14:26:02,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f8c0a67/928394b8a0114ceba8b7485bc0010b9e/FLAGe7da67cb6 [2022-01-10 14:26:02,980 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:26:02,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2022-01-10 14:26:02,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f8c0a67/928394b8a0114ceba8b7485bc0010b9e/FLAGe7da67cb6 [2022-01-10 14:26:03,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f8c0a67/928394b8a0114ceba8b7485bc0010b9e [2022-01-10 14:26:03,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:26:03,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:26:03,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:26:03,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:26:03,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:26:03,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a4171c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03, skipping insertion in model container [2022-01-10 14:26:03,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:26:03,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:26:03,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i[893,906] [2022-01-10 14:26:03,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:26:03,203 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:26:03,219 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i[893,906] [2022-01-10 14:26:03,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:26:03,249 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:26:03,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03 WrapperNode [2022-01-10 14:26:03,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:26:03,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:26:03,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:26:03,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:26:03,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,288 INFO L137 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 105 [2022-01-10 14:26:03,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:26:03,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:26:03,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:26:03,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:26:03,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:26:03,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:26:03,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:26:03,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:26:03,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:26:03,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:26:03,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 14:26:03,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 14:26:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:26:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:26:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:26:03,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:26:03,450 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:26:03,451 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:26:03,661 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:26:03,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:26:03,666 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 14:26:03,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:26:03 BoogieIcfgContainer [2022-01-10 14:26:03,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:26:03,669 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:26:03,669 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:26:03,684 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:26:03,686 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:26:03" (1/1) ... [2022-01-10 14:26:03,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:26:03 BasicIcfg [2022-01-10 14:26:03,761 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:26:03,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:26:03,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:26:03,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:26:03,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:26:03" (1/4) ... [2022-01-10 14:26:03,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@800abee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:26:03, skipping insertion in model container [2022-01-10 14:26:03,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:26:03" (2/4) ... [2022-01-10 14:26:03,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@800abee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:26:03, skipping insertion in model container [2022-01-10 14:26:03,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:26:03" (3/4) ... [2022-01-10 14:26:03,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@800abee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:26:03, skipping insertion in model container [2022-01-10 14:26:03,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:26:03" (4/4) ... [2022-01-10 14:26:03,767 INFO L111 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.iTransformedIcfg [2022-01-10 14:26:03,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:26:03,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-01-10 14:26:03,807 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:26:03,813 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 14:26:03,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-01-10 14:26:03,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 45 states have internal predecessors, (59), 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) [2022-01-10 14:26:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 14:26:03,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:26:03,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:26:03,829 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-10 14:26:03,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:26:03,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1997411150, now seen corresponding path program 1 times [2022-01-10 14:26:03,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:26:03,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220777440] [2022-01-10 14:26:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:03,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:26:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:03,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:26:03,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220777440] [2022-01-10 14:26:03,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220777440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:26:03,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:26:03,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:26:03,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638495873] [2022-01-10 14:26:03,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:26:04,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 14:26:04,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:26:04,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 14:26:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:26:04,033 INFO L87 Difference]: Start difference. First operand has 46 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 45 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-01-10 14:26:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:26:04,055 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2022-01-10 14:26:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 14:26:04,057 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 14:26:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:26:04,067 INFO L225 Difference]: With dead ends: 86 [2022-01-10 14:26:04,067 INFO L226 Difference]: Without dead ends: 41 [2022-01-10 14:26:04,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:26:04,075 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:26:04,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:26:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-10 14:26:04,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-10 14:26:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 40 states have internal predecessors, (42), 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) [2022-01-10 14:26:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-01-10 14:26:04,110 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 10 [2022-01-10 14:26:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:26:04,111 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-01-10 14:26:04,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-01-10 14:26:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-01-10 14:26:04,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 14:26:04,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:26:04,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:26:04,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:26:04,114 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-10 14:26:04,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:26:04,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1997440941, now seen corresponding path program 1 times [2022-01-10 14:26:04,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:26:04,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051655266] [2022-01-10 14:26:04,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:04,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:26:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:04,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:26:04,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051655266] [2022-01-10 14:26:04,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051655266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:26:04,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:26:04,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:26:04,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556801794] [2022-01-10 14:26:04,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:26:04,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:26:04,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:26:04,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:26:04,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:26:04,252 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-01-10 14:26:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:26:04,386 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2022-01-10 14:26:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:26:04,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 14:26:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:26:04,389 INFO L225 Difference]: With dead ends: 63 [2022-01-10 14:26:04,390 INFO L226 Difference]: Without dead ends: 57 [2022-01-10 14:26:04,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:26:04,394 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 20 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:26:04,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 84 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:26:04,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-10 14:26:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2022-01-10 14:26:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 49 states have internal predecessors, (54), 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) [2022-01-10 14:26:04,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-01-10 14:26:04,408 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 10 [2022-01-10 14:26:04,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:26:04,409 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-01-10 14:26:04,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-01-10 14:26:04,409 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-01-10 14:26:04,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 14:26:04,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:26:04,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:26:04,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:26:04,412 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-10 14:26:04,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:26:04,413 INFO L85 PathProgramCache]: Analyzing trace with hash -309600078, now seen corresponding path program 1 times [2022-01-10 14:26:04,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:26:04,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972240882] [2022-01-10 14:26:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:04,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:26:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:04,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:26:04,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972240882] [2022-01-10 14:26:04,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972240882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:26:04,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:26:04,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:26:04,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493931247] [2022-01-10 14:26:04,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:26:04,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:26:04,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:26:04,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:26:04,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:26:04,582 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:26:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:26:04,709 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2022-01-10 14:26:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:26:04,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 14:26:04,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:26:04,712 INFO L225 Difference]: With dead ends: 57 [2022-01-10 14:26:04,712 INFO L226 Difference]: Without dead ends: 53 [2022-01-10 14:26:04,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:26:04,720 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 56 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:26:04,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 79 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:26:04,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-10 14:26:04,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-01-10 14:26:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.25) internal successors, (55), 51 states have internal predecessors, (55), 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) [2022-01-10 14:26:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2022-01-10 14:26:04,735 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 12 [2022-01-10 14:26:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:26:04,735 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2022-01-10 14:26:04,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:26:04,736 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2022-01-10 14:26:04,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 14:26:04,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:26:04,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:26:04,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:26:04,739 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-10 14:26:04,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:26:04,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1541015261, now seen corresponding path program 1 times [2022-01-10 14:26:04,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:26:04,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870282485] [2022-01-10 14:26:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:04,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:26:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:04,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:26:04,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870282485] [2022-01-10 14:26:04,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870282485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:26:04,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:26:04,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:26:04,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739547175] [2022-01-10 14:26:04,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:26:04,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:26:04,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:26:04,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:26:04,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:26:04,821 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-01-10 14:26:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:26:04,886 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2022-01-10 14:26:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:26:04,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-10 14:26:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:26:04,888 INFO L225 Difference]: With dead ends: 61 [2022-01-10 14:26:04,888 INFO L226 Difference]: Without dead ends: 59 [2022-01-10 14:26:04,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:26:04,889 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 18 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:26:04,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 99 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:26:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-10 14:26:04,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2022-01-10 14:26:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 54 states have internal predecessors, (58), 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) [2022-01-10 14:26:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-01-10 14:26:04,897 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 15 [2022-01-10 14:26:04,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:26:04,898 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-01-10 14:26:04,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-01-10 14:26:04,898 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-01-10 14:26:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 14:26:04,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:26:04,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:26:04,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 14:26:04,899 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-10 14:26:04,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:26:04,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1869935940, now seen corresponding path program 1 times [2022-01-10 14:26:04,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:26:04,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713753795] [2022-01-10 14:26:04,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:04,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:26:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:05,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:26:05,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713753795] [2022-01-10 14:26:05,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713753795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:26:05,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:26:05,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 14:26:05,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329049428] [2022-01-10 14:26:05,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:26:05,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:26:05,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:26:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:26:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:26:05,035 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-01-10 14:26:05,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:26:05,210 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-01-10 14:26:05,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:26:05,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 14:26:05,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:26:05,214 INFO L225 Difference]: With dead ends: 83 [2022-01-10 14:26:05,214 INFO L226 Difference]: Without dead ends: 69 [2022-01-10 14:26:05,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:26:05,216 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 107 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:26:05,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 93 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:26:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-10 14:26:05,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2022-01-10 14:26:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 60 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:26:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2022-01-10 14:26:05,248 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 16 [2022-01-10 14:26:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:26:05,248 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2022-01-10 14:26:05,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-01-10 14:26:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2022-01-10 14:26:05,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 14:26:05,249 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:26:05,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:26:05,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 14:26:05,250 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-10 14:26:05,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:26:05,250 INFO L85 PathProgramCache]: Analyzing trace with hash -848013536, now seen corresponding path program 1 times [2022-01-10 14:26:05,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:26:05,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759360885] [2022-01-10 14:26:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:05,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:26:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:05,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:26:05,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759360885] [2022-01-10 14:26:05,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759360885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:26:05,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:26:05,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 14:26:05,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401948958] [2022-01-10 14:26:05,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:26:05,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 14:26:05,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:26:05,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 14:26:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:26:05,323 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:26:05,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:26:05,504 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2022-01-10 14:26:05,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 14:26:05,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 14:26:05,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:26:05,506 INFO L225 Difference]: With dead ends: 77 [2022-01-10 14:26:05,506 INFO L226 Difference]: Without dead ends: 75 [2022-01-10 14:26:05,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-01-10 14:26:05,507 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 163 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:26:05,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 105 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:26:05,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-10 14:26:05,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2022-01-10 14:26:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 60 states have internal predecessors, (66), 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) [2022-01-10 14:26:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2022-01-10 14:26:05,523 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 17 [2022-01-10 14:26:05,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:26:05,523 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2022-01-10 14:26:05,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:26:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2022-01-10 14:26:05,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 14:26:05,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:26:05,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:26:05,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 14:26:05,525 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-10 14:26:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:26:05,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1052091417, now seen corresponding path program 1 times [2022-01-10 14:26:05,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:26:05,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752790534] [2022-01-10 14:26:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:05,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:26:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:05,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:26:05,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752790534] [2022-01-10 14:26:05,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752790534] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:26:05,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688112851] [2022-01-10 14:26:05,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:05,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:26:05,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:26:05,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:26:05,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:26:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:05,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 14:26:05,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:26:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:06,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:26:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:06,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688112851] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:26:06,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:26:06,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-01-10 14:26:06,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681972063] [2022-01-10 14:26:06,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:26:06,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 14:26:06,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:26:06,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 14:26:06,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 14:26:06,422 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 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) [2022-01-10 14:26:06,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:26:06,834 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2022-01-10 14:26:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 14:26:06,835 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-10 14:26:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:26:06,836 INFO L225 Difference]: With dead ends: 98 [2022-01-10 14:26:06,836 INFO L226 Difference]: Without dead ends: 92 [2022-01-10 14:26:06,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2022-01-10 14:26:06,837 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 116 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 14:26:06,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 145 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 14:26:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-10 14:26:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2022-01-10 14:26:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 73 states have internal predecessors, (81), 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) [2022-01-10 14:26:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2022-01-10 14:26:06,860 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 21 [2022-01-10 14:26:06,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:26:06,860 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2022-01-10 14:26:06,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 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) [2022-01-10 14:26:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2022-01-10 14:26:06,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 14:26:06,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:26:06,861 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:26:06,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 14:26:07,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:26:07,064 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-10 14:26:07,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:26:07,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1692124899, now seen corresponding path program 1 times [2022-01-10 14:26:07,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:26:07,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274144708] [2022-01-10 14:26:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:07,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:26:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:07,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:26:07,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274144708] [2022-01-10 14:26:07,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274144708] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:26:07,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976328982] [2022-01-10 14:26:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:07,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:26:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:26:07,158 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:26:07,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 14:26:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:07,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 14:26:07,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:26:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:07,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:26:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:08,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976328982] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:26:08,389 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:26:08,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 6] total 13 [2022-01-10 14:26:08,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722455489] [2022-01-10 14:26:08,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:26:08,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 14:26:08,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:26:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 14:26:08,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 14:26:08,391 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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) [2022-01-10 14:26:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:26:09,256 INFO L93 Difference]: Finished difference Result 134 states and 140 transitions. [2022-01-10 14:26:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 14:26:09,257 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-10 14:26:09,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:26:09,257 INFO L225 Difference]: With dead ends: 134 [2022-01-10 14:26:09,257 INFO L226 Difference]: Without dead ends: 132 [2022-01-10 14:26:09,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2022-01-10 14:26:09,258 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 149 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 14:26:09,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 248 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 14:26:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-01-10 14:26:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 90. [2022-01-10 14:26:09,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 89 states have internal predecessors, (102), 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) [2022-01-10 14:26:09,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2022-01-10 14:26:09,274 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 26 [2022-01-10 14:26:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:26:09,274 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2022-01-10 14:26:09,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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) [2022-01-10 14:26:09,275 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2022-01-10 14:26:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 14:26:09,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:26:09,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:26:09,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 14:26:09,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-01-10 14:26:09,482 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-01-10 14:26:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:26:09,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1480504458, now seen corresponding path program 1 times [2022-01-10 14:26:09,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:26:09,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007838338] [2022-01-10 14:26:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:09,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:26:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:09,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:26:09,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007838338] [2022-01-10 14:26:09,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007838338] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:26:09,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953811552] [2022-01-10 14:26:09,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:26:09,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:26:09,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:26:09,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:26:09,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 14:26:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:26:09,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 14:26:09,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:26:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:26:19,032 INFO L328 TraceCheckSpWp]: Computing backward predicates...