/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_BITWISE.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:33:23,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:33:23,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:33:23,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 12:33:23,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:33:23,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:33:23,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:33:23,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:33:23,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:33:23,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:33:23,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:33:23,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:33:23,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:33:23,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:33:23,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:33:23,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:33:23,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:33:23,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:33:23,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:33:23,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:33:23,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:33:23,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 12:33:23,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:33:23,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:33:23,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:33:23,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:33:23,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:33:23,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:33:23,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:33:23,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:33:23,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:33:23,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:33:23,385 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:33:23,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:33:23,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:33:23,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:33:23,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:33:23,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:33:23,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:33:23,386 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:33:23,386 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:33:23,386 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:33:23,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:33:23,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:33:23,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:33:23,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:33:23,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:33:23,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:33:23,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:33:23,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:33:23,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:33:23,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:33:23,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:33:23,387 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:33:23,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:33:23,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:33:23,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:33:23,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:33:23,388 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:33:23,389 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:33:23,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:33:23,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:33:23,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:33:23,578 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:33:23,579 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:33:23,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2022-01-10 12:33:23,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/166825b14/d03de0b920b9435e8daa1b5ebf76d02e/FLAG20b191f86 [2022-01-10 12:33:23,983 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:33:23,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2022-01-10 12:33:23,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/166825b14/d03de0b920b9435e8daa1b5ebf76d02e/FLAG20b191f86 [2022-01-10 12:33:24,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/166825b14/d03de0b920b9435e8daa1b5ebf76d02e [2022-01-10 12:33:24,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:33:24,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:33:24,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:33:24,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:33:24,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:33:24,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f5a9860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24, skipping insertion in model container [2022-01-10 12:33:24,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:33:24,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:33:24,163 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-simple/id_b5_o10-2.c[530,543] [2022-01-10 12:33:24,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:33:24,174 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:33:24,184 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-simple/id_b5_o10-2.c[530,543] [2022-01-10 12:33:24,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:33:24,193 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:33:24,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24 WrapperNode [2022-01-10 12:33:24,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:33:24,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:33:24,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:33:24,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:33:24,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,222 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-01-10 12:33:24,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:33:24,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:33:24,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:33:24,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:33:24,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:33:24,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:33:24,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:33:24,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:33:24,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:33:24,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:33:24,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:33:24,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:33:24,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:33:24,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:33:24,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:33:24,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:33:24,297 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-01-10 12:33:24,297 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-01-10 12:33:24,337 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:33:24,338 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:33:24,404 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:33:24,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:33:24,408 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 12:33:24,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:33:24 BoogieIcfgContainer [2022-01-10 12:33:24,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:33:24,410 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:33:24,410 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:33:24,411 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:33:24,413 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:33:24" (1/1) ... [2022-01-10 12:33:24,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:33:24 BasicIcfg [2022-01-10 12:33:24,483 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:33:24,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:33:24,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:33:24,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:33:24,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:33:24" (1/4) ... [2022-01-10 12:33:24,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19eb7b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:33:24, skipping insertion in model container [2022-01-10 12:33:24,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:33:24" (2/4) ... [2022-01-10 12:33:24,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19eb7b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:33:24, skipping insertion in model container [2022-01-10 12:33:24,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:33:24" (3/4) ... [2022-01-10 12:33:24,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19eb7b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:33:24, skipping insertion in model container [2022-01-10 12:33:24,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:33:24" (4/4) ... [2022-01-10 12:33:24,508 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.cTransformedIcfg [2022-01-10 12:33:24,512 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:33:24,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 12:33:24,540 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:33:24,545 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:33:24,545 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 12:33:24,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 12:33:24,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 12:33:24,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:33:24,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:33:24,560 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:33:24,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:33:24,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1136804482, now seen corresponding path program 1 times [2022-01-10 12:33:24,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:33:24,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328161575] [2022-01-10 12:33:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:33:24,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:33:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:33:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 12:33:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:33:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:33:24,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:33:24,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328161575] [2022-01-10 12:33:24,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328161575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:33:24,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:33:24,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:33:24,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492162306] [2022-01-10 12:33:24,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:33:24,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:33:24,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:33:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:33:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:33:24,828 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-01-10 12:33:24,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:33:24,864 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-01-10 12:33:24,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:33:24,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2022-01-10 12:33:24,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:33:24,870 INFO L225 Difference]: With dead ends: 29 [2022-01-10 12:33:24,871 INFO L226 Difference]: Without dead ends: 16 [2022-01-10 12:33:24,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:33:24,875 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:33:24,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 62 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:33:24,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-01-10 12:33:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-01-10 12:33:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 12:33:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-01-10 12:33:24,900 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2022-01-10 12:33:24,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:33:24,900 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-01-10 12:33:24,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-01-10 12:33:24,900 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-01-10 12:33:24,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 12:33:24,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:33:24,901 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:33:24,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:33:24,902 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:33:24,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:33:24,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1639188531, now seen corresponding path program 1 times [2022-01-10 12:33:24,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:33:24,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464576274] [2022-01-10 12:33:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:33:24,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:33:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:33:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 12:33:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:33:24,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 12:33:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:33:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:33:24,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:33:24,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464576274] [2022-01-10 12:33:24,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464576274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:33:24,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:33:24,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:33:24,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063001069] [2022-01-10 12:33:24,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:33:24,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:33:24,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:33:24,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:33:24,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:33:24,981 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 12:33:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:33:24,996 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-01-10 12:33:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:33:24,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-01-10 12:33:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:33:24,998 INFO L225 Difference]: With dead ends: 22 [2022-01-10 12:33:24,998 INFO L226 Difference]: Without dead ends: 18 [2022-01-10 12:33:24,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:33:24,999 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:33:24,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:33:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-10 12:33:25,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2022-01-10 12:33:25,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 12:33:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-01-10 12:33:25,003 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 17 [2022-01-10 12:33:25,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:33:25,003 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-01-10 12:33:25,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 12:33:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-01-10 12:33:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 12:33:25,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:33:25,004 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:33:25,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:33:25,005 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:33:25,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:33:25,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1610559380, now seen corresponding path program 1 times [2022-01-10 12:33:25,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:33:25,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290460455] [2022-01-10 12:33:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:33:25,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:33:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:33:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 12:33:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:33:25,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 12:33:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:33:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:33:25,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:33:25,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290460455] [2022-01-10 12:33:25,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290460455] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:33:25,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965331773] [2022-01-10 12:33:25,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:33:25,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:33:25,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:33:25,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:33:25,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:33:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:33:25,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 12:33:25,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:33:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:33:25,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:33:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:33:25,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965331773] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:33:25,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:33:25,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-01-10 12:33:25,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796436425] [2022-01-10 12:33:25,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:33:25,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 12:33:25,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:33:25,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 12:33:25,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-01-10 12:33:25,722 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 13 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 12:33:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:33:25,823 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-01-10 12:33:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 12:33:25,824 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 13 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 17 [2022-01-10 12:33:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:33:25,824 INFO L225 Difference]: With dead ends: 36 [2022-01-10 12:33:25,825 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:33:25,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:33:25,828 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:33:25,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 131 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:33:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:33:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:33:25,830 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) [2022-01-10 12:33:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:33:25,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-01-10 12:33:25,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:33:25,831 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:33:25,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 13 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-10 12:33:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:33:25,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:33:25,834 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 12:33:25,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 12:33:26,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:33:26,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 12:33:26,056 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 12:33:26,056 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 12:33:26,056 INFO L861 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: true [2022-01-10 12:33:26,056 INFO L858 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-01-10 12:33:26,056 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-01-10 12:33:26,056 INFO L858 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-01-10 12:33:26,056 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 19) no Hoare annotation was computed. [2022-01-10 12:33:26,056 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-01-10 12:33:26,057 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 12:33:26,057 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 12:33:26,057 INFO L861 garLoopResultBuilder]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2022-01-10 12:33:26,057 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-01-10 12:33:26,057 INFO L858 garLoopResultBuilder]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2022-01-10 12:33:26,057 INFO L861 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: true [2022-01-10 12:33:26,057 INFO L858 garLoopResultBuilder]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2022-01-10 12:33:26,057 INFO L858 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2022-01-10 12:33:26,057 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-01-10 12:33:26,060 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-10 12:33:26,061 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 12:33:26,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:33:26 BasicIcfg [2022-01-10 12:33:26,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 12:33:26,064 INFO L158 Benchmark]: Toolchain (without parser) took 2056.09ms. Allocated memory is still 192.9MB. Free memory was 143.2MB in the beginning and 70.5MB in the end (delta: 72.7MB). Peak memory consumption was 72.6MB. Max. memory is 8.0GB. [2022-01-10 12:33:26,064 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 192.9MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 12:33:26,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.01ms. Allocated memory is still 192.9MB. Free memory was 142.9MB in the beginning and 169.8MB in the end (delta: -26.9MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-01-10 12:33:26,064 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.88ms. Allocated memory is still 192.9MB. Free memory was 169.8MB in the beginning and 168.6MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 12:33:26,065 INFO L158 Benchmark]: Boogie Preprocessor took 21.14ms. Allocated memory is still 192.9MB. Free memory was 168.6MB in the beginning and 167.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 12:33:26,065 INFO L158 Benchmark]: RCFGBuilder took 164.77ms. Allocated memory is still 192.9MB. Free memory was 167.5MB in the beginning and 158.6MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-10 12:33:26,065 INFO L158 Benchmark]: IcfgTransformer took 73.13ms. Allocated memory is still 192.9MB. Free memory was 158.6MB in the beginning and 155.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 12:33:26,065 INFO L158 Benchmark]: TraceAbstraction took 1576.07ms. Allocated memory is still 192.9MB. Free memory was 154.9MB in the beginning and 70.5MB in the end (delta: 84.4MB). Peak memory consumption was 84.9MB. Max. memory is 8.0GB. [2022-01-10 12:33:26,067 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 192.9MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 172.01ms. Allocated memory is still 192.9MB. Free memory was 142.9MB in the beginning and 169.8MB in the end (delta: -26.9MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.88ms. Allocated memory is still 192.9MB. Free memory was 169.8MB in the beginning and 168.6MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.14ms. Allocated memory is still 192.9MB. Free memory was 168.6MB in the beginning and 167.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 164.77ms. Allocated memory is still 192.9MB. Free memory was 167.5MB in the beginning and 158.6MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 73.13ms. Allocated memory is still 192.9MB. Free memory was 158.6MB in the beginning and 155.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 1576.07ms. Allocated memory is still 192.9MB. Free memory was 154.9MB in the beginning and 70.5MB in the end (delta: 84.4MB). Peak memory consumption was 84.9MB. 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: 17]: 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 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 247 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 203 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 44 mSDtfsCounter, 77 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 25, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 279 SizeOfPredicates, 2 NumberOfNonLiveVariables, 115 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/16 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 RESULT: Ultimate proved your program to be correct! [2022-01-10 12:33:26,095 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...