./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/afnp2014.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/afnp2014.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47b2b831be7ca2da97cc2b93acc9fcef98786cfa ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 02:57:08,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 02:57:08,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 02:57:08,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 02:57:08,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 02:57:08,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 02:57:08,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 02:57:08,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 02:57:08,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 02:57:08,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 02:57:08,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 02:57:08,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 02:57:08,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 02:57:08,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 02:57:08,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 02:57:08,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 02:57:08,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 02:57:08,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 02:57:08,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 02:57:08,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 02:57:08,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 02:57:08,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 02:57:08,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 02:57:08,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 02:57:08,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 02:57:08,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 02:57:08,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 02:57:08,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 02:57:08,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 02:57:08,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 02:57:08,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 02:57:08,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 02:57:08,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 02:57:08,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 02:57:08,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 02:57:08,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 02:57:08,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 02:57:08,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 02:57:08,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 02:57:08,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 02:57:08,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 02:57:08,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 02:57:08,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 02:57:08,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 02:57:08,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 02:57:08,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 02:57:08,328 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 02:57:08,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 02:57:08,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 02:57:08,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 02:57:08,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 02:57:08,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 02:57:08,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 02:57:08,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 02:57:08,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 02:57:08,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 02:57:08,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 02:57:08,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 02:57:08,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 02:57:08,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 02:57:08,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 02:57:08,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 02:57:08,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 02:57:08,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 02:57:08,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 02:57:08,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 02:57:08,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 02:57:08,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 02:57:08,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 02:57:08,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 02:57:08,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47b2b831be7ca2da97cc2b93acc9fcef98786cfa [2021-07-05 02:57:08,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 02:57:08,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 02:57:08,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 02:57:08,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 02:57:08,600 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 02:57:08,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/afnp2014.i [2021-07-05 02:57:08,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11ac8f690/d32adf1f826d429bb1b2dbc7d604cb5a/FLAG3abb515b6 [2021-07-05 02:57:08,993 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 02:57:08,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/afnp2014.i [2021-07-05 02:57:08,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11ac8f690/d32adf1f826d429bb1b2dbc7d604cb5a/FLAG3abb515b6 [2021-07-05 02:57:09,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11ac8f690/d32adf1f826d429bb1b2dbc7d604cb5a [2021-07-05 02:57:09,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 02:57:09,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 02:57:09,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 02:57:09,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 02:57:09,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 02:57:09,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@587181c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09, skipping insertion in model container [2021-07-05 02:57:09,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 02:57:09,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 02:57:09,149 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/afnp2014.i[895,908] [2021-07-05 02:57:09,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 02:57:09,166 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 02:57:09,214 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/afnp2014.i[895,908] [2021-07-05 02:57:09,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 02:57:09,229 INFO L208 MainTranslator]: Completed translation [2021-07-05 02:57:09,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09 WrapperNode [2021-07-05 02:57:09,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 02:57:09,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 02:57:09,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 02:57:09,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 02:57:09,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 02:57:09,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 02:57:09,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 02:57:09,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 02:57:09,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 02:57:09,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 02:57:09,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 02:57:09,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 02:57:09,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09" (1/1) ... [2021-07-05 02:57:09,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 02:57:09,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 02:57:09,299 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) [2021-07-05 02:57:09,314 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 [2021-07-05 02:57:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 02:57:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 02:57:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 02:57:09,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 02:57:09,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 02:57:09,509 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-05 02:57:09,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:57:09 BoogieIcfgContainer [2021-07-05 02:57:09,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 02:57:09,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 02:57:09,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 02:57:09,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 02:57:09,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 02:57:09" (1/3) ... [2021-07-05 02:57:09,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a69a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 02:57:09, skipping insertion in model container [2021-07-05 02:57:09,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:57:09" (2/3) ... [2021-07-05 02:57:09,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a69a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 02:57:09, skipping insertion in model container [2021-07-05 02:57:09,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:57:09" (3/3) ... [2021-07-05 02:57:09,526 INFO L111 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2021-07-05 02:57:09,531 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 02:57:09,531 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-05 02:57:09,586 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 02:57:09,590 INFO L329 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 02:57:09,595 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 02:57:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 02:57:09,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-05 02:57:09,610 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:57:09,610 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-05 02:57:09,611 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:57:09,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:57:09,615 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2021-07-05 02:57:09,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:57:09,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920355136] [2021-07-05 02:57:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:57:09,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:57:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:57:09,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:09,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:09,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:09,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 02:57:09,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 02:57:09,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920355136] [2021-07-05 02:57:09,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920355136] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 02:57:09,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 02:57:09,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 02:57:09,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290903314] [2021-07-05 02:57:09,719 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-05 02:57:09,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 02:57:09,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-05 02:57:09,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 02:57:09,732 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-07-05 02:57:09,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 02:57:09,741 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-07-05 02:57:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-05 02:57:09,742 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-07-05 02:57:09,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 02:57:09,747 INFO L225 Difference]: With dead ends: 21 [2021-07-05 02:57:09,747 INFO L226 Difference]: Without dead ends: 9 [2021-07-05 02:57:09,749 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 02:57:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-07-05 02:57:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-07-05 02:57:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 02:57:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-07-05 02:57:09,767 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-07-05 02:57:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 02:57:09,767 INFO L442 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-07-05 02:57:09,768 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-07-05 02:57:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-07-05 02:57:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-05 02:57:09,768 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:57:09,769 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 02:57:09,769 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 02:57:09,769 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:57:09,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:57:09,772 INFO L82 PathProgramCache]: Analyzing trace with hash 177690766, now seen corresponding path program 1 times [2021-07-05 02:57:09,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:57:09,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747744703] [2021-07-05 02:57:09,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:57:09,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:57:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:57:09,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:09,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:09,865 INFO L142 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size [2021-07-05 02:57:09,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-05 02:57:09,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:09,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 02:57:09,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:09,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 02:57:09,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 02:57:09,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747744703] [2021-07-05 02:57:09,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747744703] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 02:57:09,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 02:57:09,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 02:57:09,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101333004] [2021-07-05 02:57:09,920 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 02:57:09,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 02:57:09,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 02:57:09,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 02:57:09,921 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-07-05 02:57:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 02:57:09,966 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-07-05 02:57:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-05 02:57:09,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-07-05 02:57:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 02:57:09,967 INFO L225 Difference]: With dead ends: 16 [2021-07-05 02:57:09,967 INFO L226 Difference]: Without dead ends: 12 [2021-07-05 02:57:09,968 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-05 02:57:09,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-07-05 02:57:09,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-07-05 02:57:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-07-05 02:57:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-07-05 02:57:09,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2021-07-05 02:57:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 02:57:09,970 INFO L442 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-07-05 02:57:09,970 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-07-05 02:57:09,970 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-07-05 02:57:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-05 02:57:09,970 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:57:09,970 INFO L525 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 02:57:09,971 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 02:57:09,971 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:57:09,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:57:09,971 INFO L82 PathProgramCache]: Analyzing trace with hash -777654537, now seen corresponding path program 1 times [2021-07-05 02:57:09,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:57:09,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727923039] [2021-07-05 02:57:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:57:09,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:57:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:57:10,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 02:57:10,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 02:57:10,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 02:57:10,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 02:57:10,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727923039] [2021-07-05 02:57:10,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727923039] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 02:57:10,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630066193] [2021-07-05 02:57:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:57:10,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 02:57:10,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 02:57:10,071 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) [2021-07-05 02:57:10,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-07-05 02:57:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:57:10,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-05 02:57:10,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-05 02:57:10,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 02:57:10,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-05 02:57:10,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 02:57:10,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 02:57:10,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-05 02:57:10,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 02:57:10,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 02:57:10,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 02:57:10,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 02:57:10,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 02:57:10,245 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-07-05 02:57:10,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,254 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-07-05 02:57:10,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 02:57:10,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630066193] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 02:57:10,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-05 02:57:10,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-07-05 02:57:10,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705008094] [2021-07-05 02:57:10,258 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-05 02:57:10,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 02:57:10,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-05 02:57:10,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-05 02:57:10,259 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 02:57:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 02:57:10,284 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-07-05 02:57:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-05 02:57:10,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-07-05 02:57:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 02:57:10,285 INFO L225 Difference]: With dead ends: 19 [2021-07-05 02:57:10,285 INFO L226 Difference]: Without dead ends: 15 [2021-07-05 02:57:10,286 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-05 02:57:10,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-07-05 02:57:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-07-05 02:57:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2021-07-05 02:57:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-07-05 02:57:10,288 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2021-07-05 02:57:10,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 02:57:10,288 INFO L442 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-07-05 02:57:10,288 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 02:57:10,288 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-07-05 02:57:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-05 02:57:10,289 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:57:10,289 INFO L525 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2021-07-05 02:57:10,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-07-05 02:57:10,506 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 02:57:10,506 INFO L374 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:57:10,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:57:10,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1278694382, now seen corresponding path program 2 times [2021-07-05 02:57:10,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:57:10,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465685900] [2021-07-05 02:57:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:57:10,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:57:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:57:10,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 02:57:10,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 02:57:10,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 02:57:10,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 02:57:10,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465685900] [2021-07-05 02:57:10,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465685900] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 02:57:10,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446385795] [2021-07-05 02:57:10,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-07-05 02:57:10,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 02:57:10,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 02:57:10,563 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) [2021-07-05 02:57:10,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-07-05 02:57:10,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-05 02:57:10,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-05 02:57:10,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-05 02:57:10,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-05 02:57:10,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 02:57:10,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 02:57:10,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-05 02:57:10,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 02:57:10,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 02:57:10,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-05 02:57:10,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 02:57:10,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 02:57:10,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-05 02:57:10,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 02:57:10,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 02:57:10,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-05 02:57:10,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 02:57:10,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 02:57:10,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 02:57:10,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-05 02:57:10,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 02:57:10,677 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-07-05 02:57:10,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:57:10,685 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-07-05 02:57:10,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:57:10,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:57:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 02:57:10,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446385795] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 02:57:10,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-05 02:57:10,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-07-05 02:57:10,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688305235] [2021-07-05 02:57:10,688 INFO L425 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-05 02:57:10,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 02:57:10,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-05 02:57:10,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-05 02:57:10,689 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-07-05 02:57:10,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 02:57:10,716 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-07-05 02:57:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-05 02:57:10,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-07-05 02:57:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 02:57:10,716 INFO L225 Difference]: With dead ends: 15 [2021-07-05 02:57:10,717 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 02:57:10,717 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-05 02:57:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 02:57:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 02:57:10,717 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) [2021-07-05 02:57:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 02:57:10,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-07-05 02:57:10,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 02:57:10,718 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 02:57:10,718 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-07-05 02:57:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 02:57:10,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 02:57:10,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-05 02:57:10,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:57:10,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:57:10,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:57:10,747 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-05 02:57:10,748 INFO L762 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-07-05 02:57:10,748 INFO L762 garLoopResultBuilder]: For program point L27-3(lines 27 30) no Hoare annotation was computed. [2021-07-05 02:57:10,748 INFO L758 garLoopResultBuilder]: At program point L27-5(lines 27 30) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)) [2021-07-05 02:57:10,748 INFO L762 garLoopResultBuilder]: For program point L27-6(lines 27 30) no Hoare annotation was computed. [2021-07-05 02:57:10,748 INFO L762 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-07-05 02:57:10,748 INFO L765 garLoopResultBuilder]: At program point L32(lines 24 33) the Hoare annotation is: true [2021-07-05 02:57:10,748 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-05 02:57:10,749 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-05 02:57:10,749 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-05 02:57:10,749 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-07-05 02:57:10,749 INFO L762 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-07-05 02:57:10,749 INFO L765 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-07-05 02:57:10,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-07-05 02:57:10,976 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-07-05 02:57:10,978 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 02:57:10,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 02:57:10 BoogieIcfgContainer [2021-07-05 02:57:10,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 02:57:10,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 02:57:10,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 02:57:10,990 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 02:57:10,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:57:09" (3/4) ... [2021-07-05 02:57:10,992 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-05 02:57:10,998 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-07-05 02:57:10,998 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-07-05 02:57:10,998 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 02:57:10,998 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 02:57:11,015 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 02:57:11,015 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 02:57:11,016 INFO L168 Benchmark]: Toolchain (without parser) took 1998.98 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 38.5 MB in the beginning and 47.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-07-05 02:57:11,016 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 46.1 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 23.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 02:57:11,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.54 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 39.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-07-05 02:57:11,016 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.01 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 38.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 02:57:11,016 INFO L168 Benchmark]: Boogie Preprocessor took 20.40 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 37.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 02:57:11,017 INFO L168 Benchmark]: RCFGBuilder took 236.47 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 38.0 MB in the end (delta: -757.2 kB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-07-05 02:57:11,017 INFO L168 Benchmark]: TraceAbstraction took 1477.98 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.5 MB in the beginning and 50.1 MB in the end (delta: -12.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-07-05 02:57:11,017 INFO L168 Benchmark]: Witness Printer took 25.23 ms. Allocated memory is still 69.2 MB. Free memory was 50.1 MB in the beginning and 47.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 02:57:11,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 46.1 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 23.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 210.54 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 39.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.01 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 38.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.40 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 37.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 236.47 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 38.0 MB in the end (delta: -757.2 kB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1477.98 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 37.5 MB in the beginning and 50.1 MB in the end (delta: -12.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. * Witness Printer took 25.23 ms. Allocated memory is still 69.2 MB. Free memory was 50.1 MB in the beginning and 47.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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 for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1396.6ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 6.8ms, AutomataDifference: 132.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 26.4ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 16 SDslu, 41 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 150.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 12 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 5.6ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 16.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 21.6ms SsaConstructionTime, 106.0ms SatisfiabilityAnalysisTime, 442.4ms InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 6 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (0 <= y && 1 <= x) && y <= x RESULT: Ultimate proved your program to be correct! [2021-07-05 02:57:11,042 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...