/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_NONE.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:09:19,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:09:19,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:09:19,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:09:19,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:09:19,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:09:19,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:09:19,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:09:19,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:09:19,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:09:19,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:09:19,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:09:19,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:09:19,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:09:19,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:09:19,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:09:19,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:09:19,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:09:19,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:09:19,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:09:19,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:09:19,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-11 00:09:19,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:09:19,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:09:19,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:09:19,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:09:19,450 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:09:19,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:09:19,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:09:19,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:09:19,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:09:19,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:09:19,452 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:09:19,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:09:19,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:09:19,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:09:19,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:09:19,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:09:19,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:09:19,453 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:09:19,453 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:09:19,453 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:09:19,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:09:19,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:09:19,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:09:19,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:09:19,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:09:19,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:09:19,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:09:19,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:09:19,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:09:19,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:09:19,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:09:19,455 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:09:19,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:09:19,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:09:19,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:09:19,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:09:19,456 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:09:19,456 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:09:19,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:09:19,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:09:19,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:09:19,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:09:19,657 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:09:19,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2022-01-11 00:09:19,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36e4f89c/db85c8ab6453493f956c5ee76c08b5dc/FLAGa5b0726c8 [2022-01-11 00:09:20,051 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:09:20,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2022-01-11 00:09:20,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36e4f89c/db85c8ab6453493f956c5ee76c08b5dc/FLAGa5b0726c8 [2022-01-11 00:09:20,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36e4f89c/db85c8ab6453493f956c5ee76c08b5dc [2022-01-11 00:09:20,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:09:20,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:09:20,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:09:20,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:09:20,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:09:20,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61eeeac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20, skipping insertion in model container [2022-01-11 00:09:20,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:09:20,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:09:20,228 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c[975,988] [2022-01-11 00:09:20,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:09:20,237 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:09:20,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c[975,988] [2022-01-11 00:09:20,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:09:20,260 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:09:20,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20 WrapperNode [2022-01-11 00:09:20,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:09:20,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:09:20,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:09:20,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:09:20,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,281 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2022-01-11 00:09:20,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:09:20,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:09:20,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:09:20,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:09:20,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:09:20,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:09:20,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:09:20,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:09:20,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:09:20,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:09:20,373 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) [2022-01-11 00:09:20,420 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 [2022-01-11 00:09:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:09:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2022-01-11 00:09:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2022-01-11 00:09:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:09:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2022-01-11 00:09:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2022-01-11 00:09:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:09:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:09:20,474 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:09:20,475 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:09:20,599 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:09:20,603 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:09:20,603 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:09:20,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:09:20 BoogieIcfgContainer [2022-01-11 00:09:20,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:09:20,605 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:09:20,605 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:09:20,605 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:09:20,607 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:09:20" (1/1) ... [2022-01-11 00:09:20,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:09:20 BasicIcfg [2022-01-11 00:09:20,647 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:09:20,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:09:20,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:09:20,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:09:20,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:09:20" (1/4) ... [2022-01-11 00:09:20,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcd1fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:09:20, skipping insertion in model container [2022-01-11 00:09:20,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:09:20" (2/4) ... [2022-01-11 00:09:20,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcd1fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:09:20, skipping insertion in model container [2022-01-11 00:09:20,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:09:20" (3/4) ... [2022-01-11 00:09:20,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcd1fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:09:20, skipping insertion in model container [2022-01-11 00:09:20,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:09:20" (4/4) ... [2022-01-11 00:09:20,652 INFO L111 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.cTransformedIcfg [2022-01-11 00:09:20,655 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:09:20,655 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:09:20,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:09:20,701 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 [2022-01-11 00:09:20,701 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:09:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-11 00:09:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 00:09:20,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:09:20,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:09:20,725 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:09:20,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:09:20,729 INFO L85 PathProgramCache]: Analyzing trace with hash -293542936, now seen corresponding path program 1 times [2022-01-11 00:09:20,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:09:20,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825629050] [2022-01-11 00:09:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:09:20,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:09:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:09:21,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:09:21,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825629050] [2022-01-11 00:09:21,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825629050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:09:21,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:09:21,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:09:21,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000214680] [2022-01-11 00:09:21,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:09:21,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:09:21,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:09:21,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:09:21,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:09:21,220 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:09:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:09:21,325 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-01-11 00:09:21,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:09:21,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-11 00:09:21,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:09:21,334 INFO L225 Difference]: With dead ends: 37 [2022-01-11 00:09:21,334 INFO L226 Difference]: Without dead ends: 24 [2022-01-11 00:09:21,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:09:21,340 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:09:21,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 102 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:09:21,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-11 00:09:21,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-11 00:09:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-11 00:09:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-01-11 00:09:21,373 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2022-01-11 00:09:21,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:09:21,374 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-01-11 00:09:21,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:09:21,375 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-01-11 00:09:21,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 00:09:21,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:09:21,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:09:21,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:09:21,376 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:09:21,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:09:21,377 INFO L85 PathProgramCache]: Analyzing trace with hash 393959604, now seen corresponding path program 1 times [2022-01-11 00:09:21,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:09:21,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290057157] [2022-01-11 00:09:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:09:21,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:09:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:21,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:09:21,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:09:21,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290057157] [2022-01-11 00:09:21,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290057157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:09:21,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:09:21,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:09:21,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838406498] [2022-01-11 00:09:21,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:09:21,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:09:21,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:09:21,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:09:21,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:09:21,513 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:09:21,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:09:21,565 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-01-11 00:09:21,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:09:21,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-01-11 00:09:21,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:09:21,566 INFO L225 Difference]: With dead ends: 30 [2022-01-11 00:09:21,566 INFO L226 Difference]: Without dead ends: 26 [2022-01-11 00:09:21,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:09:21,568 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:09:21,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:09:21,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-11 00:09:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-01-11 00:09:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-11 00:09:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-01-11 00:09:21,572 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2022-01-11 00:09:21,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:09:21,572 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-01-11 00:09:21,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 00:09:21,572 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-01-11 00:09:21,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 00:09:21,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:09:21,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:09:21,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:09:21,573 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:09:21,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:09:21,574 INFO L85 PathProgramCache]: Analyzing trace with hash -325217637, now seen corresponding path program 1 times [2022-01-11 00:09:21,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:09:21,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604321316] [2022-01-11 00:09:21,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:09:21,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:09:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:21,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:09:21,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:09:21,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604321316] [2022-01-11 00:09:21,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604321316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:09:21,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:09:21,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:09:21,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110334613] [2022-01-11 00:09:21,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:09:21,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:09:21,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:09:21,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:09:21,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:09:21,662 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-11 00:09:21,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:09:21,691 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-01-11 00:09:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:09:21,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-01-11 00:09:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:09:21,692 INFO L225 Difference]: With dead ends: 38 [2022-01-11 00:09:21,692 INFO L226 Difference]: Without dead ends: 26 [2022-01-11 00:09:21,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:09:21,693 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:09:21,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 70 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:09:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-11 00:09:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-01-11 00:09:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-11 00:09:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-11 00:09:21,697 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 18 [2022-01-11 00:09:21,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:09:21,697 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-11 00:09:21,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-11 00:09:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-11 00:09:21,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 00:09:21,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:09:21,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:09:21,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:09:21,698 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:09:21,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:09:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash 837635920, now seen corresponding path program 1 times [2022-01-11 00:09:21,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:09:21,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899279757] [2022-01-11 00:09:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:09:21,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:09:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:21,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:09:22,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:09:22,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899279757] [2022-01-11 00:09:22,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899279757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:09:22,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:09:22,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-11 00:09:22,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191458117] [2022-01-11 00:09:22,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:09:22,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-11 00:09:22,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:09:22,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-11 00:09:22,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-11 00:09:22,006 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-11 00:09:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:09:22,120 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-01-11 00:09:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:09:22,121 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-01-11 00:09:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:09:22,121 INFO L225 Difference]: With dead ends: 35 [2022-01-11 00:09:22,121 INFO L226 Difference]: Without dead ends: 31 [2022-01-11 00:09:22,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-01-11 00:09:22,122 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:09:22,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 108 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:09:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-11 00:09:22,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-01-11 00:09:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 00:09:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-01-11 00:09:22,127 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2022-01-11 00:09:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:09:22,127 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-01-11 00:09:22,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-11 00:09:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-01-11 00:09:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-11 00:09:22,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:09:22,128 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:09:22,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:09:22,128 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:09:22,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:09:22,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1127563943, now seen corresponding path program 1 times [2022-01-11 00:09:22,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:09:22,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131530635] [2022-01-11 00:09:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:09:22,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:09:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:22,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:22,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 00:09:22,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:09:22,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131530635] [2022-01-11 00:09:22,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131530635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:09:22,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:09:22,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:09:22,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193062161] [2022-01-11 00:09:22,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:09:22,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:09:22,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:09:22,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:09:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:09:22,215 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 00:09:22,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:09:22,248 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-01-11 00:09:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:09:22,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-01-11 00:09:22,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:09:22,251 INFO L225 Difference]: With dead ends: 39 [2022-01-11 00:09:22,251 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 00:09:22,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:09:22,254 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:09:22,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 57 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:09:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 00:09:22,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-11 00:09:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 00:09:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-01-11 00:09:22,263 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 25 [2022-01-11 00:09:22,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:09:22,263 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-01-11 00:09:22,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 00:09:22,264 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-01-11 00:09:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-11 00:09:22,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:09:22,265 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:09:22,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:09:22,265 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:09:22,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:09:22,266 INFO L85 PathProgramCache]: Analyzing trace with hash -156368041, now seen corresponding path program 1 times [2022-01-11 00:09:22,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:09:22,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706380706] [2022-01-11 00:09:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:09:22,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:09:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:22,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:22,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 00:09:22,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:09:22,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706380706] [2022-01-11 00:09:22,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706380706] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:09:22,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015799946] [2022-01-11 00:09:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:09:22,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:09:22,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:09:22,604 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) [2022-01-11 00:09:22,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 00:09:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:22,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-11 00:09:22,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:09:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 00:09:36,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:09:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 00:09:44,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015799946] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:09:44,659 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:09:44,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 12] total 35 [2022-01-11 00:09:44,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116156777] [2022-01-11 00:09:44,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:09:44,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-11 00:09:44,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:09:44,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-11 00:09:44,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1066, Unknown=2, NotChecked=0, Total=1190 [2022-01-11 00:09:44,661 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 35 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 26 states have internal predecessors, (51), 9 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-11 00:09:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:09:52,551 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2022-01-11 00:09:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-11 00:09:52,552 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 26 states have internal predecessors, (51), 9 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 26 [2022-01-11 00:09:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:09:52,553 INFO L225 Difference]: With dead ends: 47 [2022-01-11 00:09:52,553 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 00:09:52,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=237, Invalid=1923, Unknown=2, NotChecked=0, Total=2162 [2022-01-11 00:09:52,555 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 35 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 00:09:52,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 239 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 249 Invalid, 0 Unknown, 18 Unchecked, 0.8s Time] [2022-01-11 00:09:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 00:09:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-11 00:09:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 00:09:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-01-11 00:09:52,558 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 26 [2022-01-11 00:09:52,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:09:52,559 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-01-11 00:09:52,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 26 states have internal predecessors, (51), 9 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-11 00:09:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-01-11 00:09:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 00:09:52,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:09:52,559 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:09:52,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 00:09:52,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-11 00:09:52,779 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:09:52,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:09:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2081207233, now seen corresponding path program 1 times [2022-01-11 00:09:52,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:09:52,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293816971] [2022-01-11 00:09:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:09:52,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:09:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:52,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:52,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:53,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:53,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 00:09:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:09:53,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:09:53,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293816971] [2022-01-11 00:09:53,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293816971] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:09:53,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947855245] [2022-01-11 00:09:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:09:53,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:09:53,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:09:53,245 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) [2022-01-11 00:09:53,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 00:09:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:09:53,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-11 00:09:53,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:09:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 00:09:55,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:10:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:10:07,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947855245] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:10:07,646 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:10:07,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 15] total 45 [2022-01-11 00:10:07,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487856169] [2022-01-11 00:10:07,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:10:07,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-11 00:10:07,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:10:07,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-11 00:10:07,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1807, Unknown=0, NotChecked=0, Total=1980 [2022-01-11 00:10:07,648 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 45 states, 40 states have (on average 1.55) internal successors, (62), 33 states have internal predecessors, (62), 11 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-11 00:10:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:10:08,544 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-01-11 00:10:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-11 00:10:08,545 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 1.55) internal successors, (62), 33 states have internal predecessors, (62), 11 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) Word has length 33 [2022-01-11 00:10:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:10:08,545 INFO L225 Difference]: With dead ends: 35 [2022-01-11 00:10:08,545 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 00:10:08,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 35 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=363, Invalid=3297, Unknown=0, NotChecked=0, Total=3660 [2022-01-11 00:10:08,547 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:10:08,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 212 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 295 Invalid, 0 Unknown, 48 Unchecked, 0.2s Time] [2022-01-11 00:10:08,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 00:10:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 00:10:08,548 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) [2022-01-11 00:10:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 00:10:08,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2022-01-11 00:10:08,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:10:08,548 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 00:10:08,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 1.55) internal successors, (62), 33 states have internal predecessors, (62), 11 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-11 00:10:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 00:10:08,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 00:10:08,552 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-11 00:10:08,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-11 00:10:08,767 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,SelfDestructingSolverStorable6 [2022-01-11 00:10:08,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 00:10:08,792 INFO L858 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2022-01-11 00:10:08,792 INFO L861 garLoopResultBuilder]: At program point isEvenENTRY(lines 28 36) the Hoare annotation is: true [2022-01-11 00:10:08,793 INFO L858 garLoopResultBuilder]: For program point isEvenFINAL(lines 28 36) no Hoare annotation was computed. [2022-01-11 00:10:08,793 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 35) no Hoare annotation was computed. [2022-01-11 00:10:08,793 INFO L858 garLoopResultBuilder]: For program point isEvenEXIT(lines 28 36) no Hoare annotation was computed. [2022-01-11 00:10:08,793 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 35) no Hoare annotation was computed. [2022-01-11 00:10:08,793 INFO L854 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (and (< 1 isEven_isEven_~nInt) (= |isEven_isEven_#in~nInt| isEven_isEven_~nInt) (< isEven_isEven_~nInt 4294967296)) [2022-01-11 00:10:08,793 INFO L861 garLoopResultBuilder]: At program point isOddENTRY(lines 18 26) the Hoare annotation is: true [2022-01-11 00:10:08,793 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 25) no Hoare annotation was computed. [2022-01-11 00:10:08,793 INFO L858 garLoopResultBuilder]: For program point isOddFINAL(lines 18 26) no Hoare annotation was computed. [2022-01-11 00:10:08,793 INFO L858 garLoopResultBuilder]: For program point L21(lines 21 25) no Hoare annotation was computed. [2022-01-11 00:10:08,793 INFO L858 garLoopResultBuilder]: For program point isOddEXIT(lines 18 26) no Hoare annotation was computed. [2022-01-11 00:10:08,793 INFO L854 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= |isOdd_isOdd_#in~nInt| isOdd_isOdd_~nInt) (<= isOdd_isOdd_~nInt |isOdd_isOdd_#in~nInt|) (< 1 isOdd_isOdd_~nInt) (<= (div (+ isOdd_isOdd_~nInt 4294967295) 4294967296) 1)) [2022-01-11 00:10:08,793 INFO L858 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2022-01-11 00:10:08,793 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-11 00:10:08,794 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-11 00:10:08,794 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 43) no Hoare annotation was computed. [2022-01-11 00:10:08,794 INFO L854 garLoopResultBuilder]: At program point L39(lines 39 51) the Hoare annotation is: (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|) [2022-01-11 00:10:08,794 INFO L854 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (<= |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| (* (mod |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| 2147483648) 2)) (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|)) [2022-01-11 00:10:08,794 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-11 00:10:08,794 INFO L858 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-01-11 00:10:08,794 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-11 00:10:08,794 INFO L858 garLoopResultBuilder]: For program point L46(lines 46 50) no Hoare annotation was computed. [2022-01-11 00:10:08,794 INFO L858 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2022-01-11 00:10:08,794 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 49) no Hoare annotation was computed. [2022-01-11 00:10:08,796 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:10:08,797 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-11 00:10:08,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:10:08 BasicIcfg [2022-01-11 00:10:08,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-11 00:10:08,804 INFO L158 Benchmark]: Toolchain (without parser) took 48734.51ms. Allocated memory was 201.3MB in the beginning and 415.2MB in the end (delta: 213.9MB). Free memory was 145.5MB in the beginning and 264.6MB in the end (delta: -119.0MB). Peak memory consumption was 95.1MB. Max. memory is 8.0GB. [2022-01-11 00:10:08,804 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 161.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 00:10:08,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.15ms. Allocated memory was 201.3MB in the beginning and 288.4MB in the end (delta: 87.0MB). Free memory was 145.3MB in the beginning and 260.9MB in the end (delta: -115.6MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. [2022-01-11 00:10:08,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.85ms. Allocated memory is still 288.4MB. Free memory was 260.3MB in the beginning and 259.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 00:10:08,804 INFO L158 Benchmark]: Boogie Preprocessor took 25.20ms. Allocated memory is still 288.4MB. Free memory was 259.2MB in the beginning and 258.2MB in the end (delta: 997.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 00:10:08,805 INFO L158 Benchmark]: RCFGBuilder took 296.69ms. Allocated memory is still 288.4MB. Free memory was 258.2MB in the beginning and 247.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-11 00:10:08,805 INFO L158 Benchmark]: IcfgTransformer took 43.03ms. Allocated memory is still 288.4MB. Free memory was 247.2MB in the beginning and 244.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-11 00:10:08,805 INFO L158 Benchmark]: TraceAbstraction took 48154.89ms. Allocated memory was 288.4MB in the beginning and 415.2MB in the end (delta: 126.9MB). Free memory was 243.6MB in the beginning and 264.6MB in the end (delta: -21.0MB). Peak memory consumption was 106.4MB. Max. memory is 8.0GB. [2022-01-11 00:10:08,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 161.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.15ms. Allocated memory was 201.3MB in the beginning and 288.4MB in the end (delta: 87.0MB). Free memory was 145.3MB in the beginning and 260.9MB in the end (delta: -115.6MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.85ms. Allocated memory is still 288.4MB. Free memory was 260.3MB in the beginning and 259.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.20ms. Allocated memory is still 288.4MB. Free memory was 259.2MB in the beginning and 258.2MB in the end (delta: 997.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 296.69ms. Allocated memory is still 288.4MB. Free memory was 258.2MB in the beginning and 247.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 43.03ms. Allocated memory is still 288.4MB. Free memory was 247.2MB in the beginning and 244.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 48154.89ms. Allocated memory was 288.4MB in the beginning and 415.2MB in the end (delta: 126.9MB). Free memory was 243.6MB in the beginning and 264.6MB in the end (delta: -21.0MB). Peak memory consumption was 106.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 49]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.1s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 156 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 886 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 66 IncrementalHoareTripleChecker+Unchecked, 760 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 850 IncrementalHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 126 mSDtfsCounter, 850 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 89 SyntacticMatches, 12 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 22.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 43 HoareAnnotationTreeSize, 8 FomulaSimplifications, 63 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 37.8s InterpolantComputationTime, 203 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 251 ConstructedInterpolants, 10 QuantifiedInterpolants, 4286 SizeOfPredicates, 13 NumberOfNonLiveVariables, 349 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 18/55 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: NULL RESULT: Ultimate proved your program to be correct! [2022-01-11 00:10:08,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...