./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_3.c --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/loops/while_infinite_loop_3.c -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 3aac8fad8f983ba6915be6b6d24065853819d497 ................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:24:39,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 02:24:39,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 02:24:39,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 02:24:39,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 02:24:39,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 02:24:39,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 02:24:39,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 02:24:39,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 02:24:39,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 02:24:39,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 02:24:39,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 02:24:39,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 02:24:39,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 02:24:39,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 02:24:39,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 02:24:39,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 02:24:39,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 02:24:39,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 02:24:39,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 02:24:39,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 02:24:39,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 02:24:39,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 02:24:39,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 02:24:39,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 02:24:39,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 02:24:39,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 02:24:39,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 02:24:39,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 02:24:39,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 02:24:39,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 02:24:39,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 02:24:39,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 02:24:39,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 02:24:39,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 02:24:39,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 02:24:39,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 02:24:39,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 02:24:39,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 02:24:39,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 02:24:39,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 02:24:39,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 02:24:39,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 02:24:39,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 02:24:39,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 02:24:39,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 02:24:39,509 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 02:24:39,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 02:24:39,509 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 02:24:39,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 02:24:39,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 02:24:39,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 02:24:39,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 02:24:39,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 02:24:39,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 02:24:39,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 02:24:39,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 02:24:39,512 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 02:24:39,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 02:24:39,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 02:24:39,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 02:24:39,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 02:24:39,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 02:24:39,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 02:24:39,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 02:24:39,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 02:24:39,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 02:24:39,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 02:24:39,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 02:24:39,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 02:24:39,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aac8fad8f983ba6915be6b6d24065853819d497 [2021-07-05 02:24:39,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 02:24:39,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 02:24:39,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 02:24:39,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 02:24:39,848 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 02:24:39,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_3.c [2021-07-05 02:24:39,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a62912af3/212515debde744919859264d11468983/FLAG277629bc1 [2021-07-05 02:24:40,316 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 02:24:40,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_3.c [2021-07-05 02:24:40,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a62912af3/212515debde744919859264d11468983/FLAG277629bc1 [2021-07-05 02:24:40,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a62912af3/212515debde744919859264d11468983 [2021-07-05 02:24:40,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 02:24:40,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 02:24:40,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 02:24:40,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 02:24:40,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 02:24:40,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525aaf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40, skipping insertion in model container [2021-07-05 02:24:40,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 02:24:40,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 02:24:40,478 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/loops/while_infinite_loop_3.c[333,346] [2021-07-05 02:24:40,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 02:24:40,492 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 02:24:40,502 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/loops/while_infinite_loop_3.c[333,346] [2021-07-05 02:24:40,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 02:24:40,514 INFO L208 MainTranslator]: Completed translation [2021-07-05 02:24:40,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40 WrapperNode [2021-07-05 02:24:40,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 02:24:40,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 02:24:40,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 02:24:40,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 02:24:40,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 02:24:40,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 02:24:40,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 02:24:40,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 02:24:40,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 02:24:40,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 02:24:40,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 02:24:40,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 02:24:40,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40" (1/1) ... [2021-07-05 02:24:40,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 02:24:40,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 02:24:40,623 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 02:24:40,650 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 02:24:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 02:24:40,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 02:24:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 02:24:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 02:24:40,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 02:24:40,914 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-05 02:24:40,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:24:40 BoogieIcfgContainer [2021-07-05 02:24:40,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 02:24:40,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 02:24:40,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 02:24:40,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 02:24:40,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 02:24:40" (1/3) ... [2021-07-05 02:24:40,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654b2fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 02:24:40, skipping insertion in model container [2021-07-05 02:24:40,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:24:40" (2/3) ... [2021-07-05 02:24:40,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654b2fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 02:24:40, skipping insertion in model container [2021-07-05 02:24:40,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:24:40" (3/3) ... [2021-07-05 02:24:40,937 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2021-07-05 02:24:40,942 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 02:24:40,943 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-05 02:24:41,011 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 02:24:41,030 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 02:24:41,030 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 02:24:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 15 states have internal predecessors, (21), 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 02:24:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-05 02:24:41,062 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:24:41,063 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-05 02:24:41,063 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:24:41,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:24:41,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1810788529, now seen corresponding path program 1 times [2021-07-05 02:24:41,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:24:41,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165823711] [2021-07-05 02:24:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:24:41,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:24:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:24:41,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:24:41,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:24:41,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:24:41,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:24:41,206 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 02:24:41,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 02:24:41,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165823711] [2021-07-05 02:24:41,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165823711] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 02:24:41,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 02:24:41,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 02:24:41,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669962627] [2021-07-05 02:24:41,224 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-05 02:24:41,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 02:24:41,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-05 02:24:41,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 02:24:41,243 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 15 states have internal predecessors, (21), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 02:24:41,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 02:24:41,256 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2021-07-05 02:24:41,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-05 02:24:41,258 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-07-05 02:24:41,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 02:24:41,264 INFO L225 Difference]: With dead ends: 22 [2021-07-05 02:24:41,264 INFO L226 Difference]: Without dead ends: 8 [2021-07-05 02:24:41,267 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 02:24:41,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-07-05 02:24:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-07-05 02:24:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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 02:24:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-07-05 02:24:41,292 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-07-05 02:24:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 02:24:41,293 INFO L442 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-07-05 02:24:41,293 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 02:24:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-07-05 02:24:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-05 02:24:41,294 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:24:41,294 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-05 02:24:41,294 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 02:24:41,294 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:24:41,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:24:41,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1810848111, now seen corresponding path program 1 times [2021-07-05 02:24:41,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:24:41,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154536165] [2021-07-05 02:24:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:24:41,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:24:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:24:41,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:24:41,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:24:41,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:24:41,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:24:41,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:24:41,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 02:24:41,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:24:41,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:24:41,407 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 02:24:41,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 02:24:41,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154536165] [2021-07-05 02:24:41,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154536165] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 02:24:41,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 02:24:41,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 02:24:41,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905366296] [2021-07-05 02:24:41,410 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 02:24:41,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 02:24:41,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 02:24:41,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 02:24:41,413 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 02:24:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 02:24:41,457 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-07-05 02:24:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-05 02:24:41,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-07-05 02:24:41,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 02:24:41,459 INFO L225 Difference]: With dead ends: 11 [2021-07-05 02:24:41,459 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 02:24:41,460 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-05 02:24:41,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 02:24:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 02:24:41,461 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 02:24:41,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 02:24:41,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-05 02:24:41,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 02:24:41,462 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 02:24:41,462 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 02:24:41,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 02:24:41,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 02:24:41,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-05 02:24:41,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:24:41,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:24:41,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:24:41,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:24:41,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:24:41,514 INFO L758 garLoopResultBuilder]: At program point L6-5(lines 5 10) the Hoare annotation is: false [2021-07-05 02:24:41,514 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-07-05 02:24:41,514 INFO L762 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-07-05 02:24:41,515 INFO L762 garLoopResultBuilder]: For program point L7-1(line 7) no Hoare annotation was computed. [2021-07-05 02:24:41,515 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-05 02:24:41,516 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-05 02:24:41,516 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-05 02:24:41,516 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-07-05 02:24:41,517 INFO L758 garLoopResultBuilder]: At program point L16loopEntry(lines 16 19) the Hoare annotation is: (= ~x~0 0) [2021-07-05 02:24:41,522 INFO L758 garLoopResultBuilder]: At program point L16-2(lines 14 21) the Hoare annotation is: (= ~x~0 0) [2021-07-05 02:24:41,523 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-05 02:24:41,523 INFO L758 garLoopResultBuilder]: At program point L34(lines 24 35) the Hoare annotation is: false [2021-07-05 02:24:41,523 INFO L762 garLoopResultBuilder]: For program point L26-2(lines 26 30) no Hoare annotation was computed. [2021-07-05 02:24:41,523 INFO L762 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-07-05 02:24:41,523 INFO L758 garLoopResultBuilder]: At program point L6-2(lines 5 30) the Hoare annotation is: (= ~x~0 0) [2021-07-05 02:24:41,524 INFO L762 garLoopResultBuilder]: For program point L6-3(lines 6 8) no Hoare annotation was computed. [2021-07-05 02:24:41,524 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 02:24:41,524 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 02:24:41,528 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/2) [2021-07-05 02:24:41,540 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 02:24:41,542 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 02:24:41,546 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 02:24:41,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 15 states have internal predecessors, (21), 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 02:24:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-05 02:24:41,548 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:24:41,548 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-05 02:24:41,548 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:24:41,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:24:41,555 INFO L82 PathProgramCache]: Analyzing trace with hash 890491815, now seen corresponding path program 1 times [2021-07-05 02:24:41,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:24:41,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515537440] [2021-07-05 02:24:41,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:24:41,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:24:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:24:41,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:24:41,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:24:41,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:24:41,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:24:41,583 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 02:24:41,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 02:24:41,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515537440] [2021-07-05 02:24:41,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515537440] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 02:24:41,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 02:24:41,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 02:24:41,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913805398] [2021-07-05 02:24:41,585 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-05 02:24:41,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 02:24:41,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-05 02:24:41,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 02:24:41,588 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 15 states have internal predecessors, (21), 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 02:24:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 02:24:41,591 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2021-07-05 02:24:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-05 02:24:41,591 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 02:24:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 02:24:41,592 INFO L225 Difference]: With dead ends: 22 [2021-07-05 02:24:41,592 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 02:24:41,593 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 02:24:41,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 02:24:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 02:24:41,593 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 02:24:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 02:24:41,594 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-07-05 02:24:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 02:24:41,594 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 02:24:41,594 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 02:24:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 02:24:41,594 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 02:24:41,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-05 02:24:41,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:24:41,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:24:41,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:24:41,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:24:41,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:24:41,607 INFO L758 garLoopResultBuilder]: At program point L6-5(lines 5 10) the Hoare annotation is: false [2021-07-05 02:24:41,607 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-07-05 02:24:41,607 INFO L762 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-07-05 02:24:41,608 INFO L762 garLoopResultBuilder]: For program point L7-1(line 7) no Hoare annotation was computed. [2021-07-05 02:24:41,608 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-05 02:24:41,608 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-05 02:24:41,608 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-05 02:24:41,608 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-07-05 02:24:41,609 INFO L758 garLoopResultBuilder]: At program point L16loopEntry(lines 16 19) the Hoare annotation is: (= ~x~0 0) [2021-07-05 02:24:41,609 INFO L758 garLoopResultBuilder]: At program point L16-2(lines 14 21) the Hoare annotation is: (= ~x~0 0) [2021-07-05 02:24:41,610 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-05 02:24:41,613 INFO L758 garLoopResultBuilder]: At program point L34(lines 24 35) the Hoare annotation is: false [2021-07-05 02:24:41,613 INFO L762 garLoopResultBuilder]: For program point L26-2(lines 26 30) no Hoare annotation was computed. [2021-07-05 02:24:41,614 INFO L762 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-07-05 02:24:41,614 INFO L758 garLoopResultBuilder]: At program point L6-2(lines 5 30) the Hoare annotation is: (= ~x~0 0) [2021-07-05 02:24:41,614 INFO L762 garLoopResultBuilder]: For program point L6-3(lines 6 8) no Hoare annotation was computed. [2021-07-05 02:24:41,614 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-05 02:24:41,615 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 02:24:41,615 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION was SAFE (2/2) [2021-07-05 02:24:41,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 02:24:41 BoogieIcfgContainer [2021-07-05 02:24:41,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 02:24:41,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 02:24:41,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 02:24:41,630 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 02:24:41,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:24:40" (3/4) ... [2021-07-05 02:24:41,633 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-05 02:24:41,641 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-07-05 02:24:41,641 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-07-05 02:24:41,641 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 02:24:41,641 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 02:24:41,665 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 02:24:41,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 02:24:41,666 INFO L168 Benchmark]: Toolchain (without parser) took 1323.81 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 39.1 MB in the beginning and 45.1 MB in the end (delta: -6.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-07-05 02:24:41,666 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 58.7 MB. Free memory is still 40.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 02:24:41,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.72 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 29.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-05 02:24:41,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.04 ms. Allocated memory is still 58.7 MB. Free memory was 29.6 MB in the beginning and 42.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-07-05 02:24:41,667 INFO L168 Benchmark]: Boogie Preprocessor took 36.93 ms. Allocated memory is still 58.7 MB. Free memory was 42.7 MB in the beginning and 41.9 MB in the end (delta: 820.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 02:24:41,667 INFO L168 Benchmark]: RCFGBuilder took 333.61 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 30.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-05 02:24:41,668 INFO L168 Benchmark]: TraceAbstraction took 697.30 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 29.9 MB in the beginning and 47.2 MB in the end (delta: -17.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 02:24:41,668 INFO L168 Benchmark]: Witness Printer took 35.43 ms. Allocated memory is still 71.3 MB. Free memory was 47.2 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 02:24:41,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 58.7 MB. Free memory is still 40.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 170.72 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 29.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.04 ms. Allocated memory is still 58.7 MB. Free memory was 29.6 MB in the beginning and 42.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.93 ms. Allocated memory is still 58.7 MB. Free memory was 42.7 MB in the beginning and 41.9 MB in the end (delta: 820.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 333.61 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 30.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 697.30 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 29.9 MB in the beginning and 47.2 MB in the end (delta: -17.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 35.43 ms. Allocated memory is still 71.3 MB. Free memory was 47.2 MB in the beginning and 45.1 MB in the end (delta: 2.1 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 - 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: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 7]: 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 518.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 15.9ms, AutomataDifference: 90.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 46.3ms, InitialAbstractionConstructionTime: 16.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 7 SDslu, 4 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 23.7ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 16.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 8.3ms SsaConstructionTime, 44.0ms SatisfiabilityAnalysisTime, 117.3ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 74.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.2ms, AutomataDifference: 6.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 12.0ms, InitialAbstractionConstructionTime: 0.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 5.1ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 11.0ms SatisfiabilityAnalysisTime, 11.2ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: x == 0 RESULT: Ultimate proved your program to be correct! [2021-07-05 02:24:41,707 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...