./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test29-2.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/ldv-regression/test29-2.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 4423667cc3eddfa8493b38643736f2952d56aa4c ........................................................................................................................................................................................................................................................................................................................................................ 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 01:00:20,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 01:00:20,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 01:00:20,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 01:00:20,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 01:00:20,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 01:00:20,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 01:00:20,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 01:00:20,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 01:00:20,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 01:00:20,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 01:00:20,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 01:00:20,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 01:00:20,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 01:00:20,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 01:00:20,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 01:00:20,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 01:00:20,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 01:00:20,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 01:00:20,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 01:00:20,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 01:00:20,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 01:00:20,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 01:00:20,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 01:00:20,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 01:00:20,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 01:00:20,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 01:00:20,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 01:00:20,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 01:00:20,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 01:00:20,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 01:00:20,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 01:00:20,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 01:00:20,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 01:00:20,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 01:00:20,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 01:00:20,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 01:00:20,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 01:00:20,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 01:00:20,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 01:00:20,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 01:00:20,551 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 01:00:20,599 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 01:00:20,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 01:00:20,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 01:00:20,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 01:00:20,601 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 01:00:20,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 01:00:20,601 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 01:00:20,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 01:00:20,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 01:00:20,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 01:00:20,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 01:00:20,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 01:00:20,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 01:00:20,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 01:00:20,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 01:00:20,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 01:00:20,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 01:00:20,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 01:00:20,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 01:00:20,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 01:00:20,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 01:00:20,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 01:00:20,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 01:00:20,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 01:00:20,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 01:00:20,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 01:00:20,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 01:00:20,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 01:00:20,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4423667cc3eddfa8493b38643736f2952d56aa4c [2021-07-05 01:00:20,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 01:00:20,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 01:00:20,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 01:00:20,907 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 01:00:20,908 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 01:00:20,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test29-2.c [2021-07-05 01:00:20,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6db19c684/b32c563eed804d1ab62adcf91529ebe7/FLAGd9fc56dfd [2021-07-05 01:00:21,343 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 01:00:21,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test29-2.c [2021-07-05 01:00:21,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6db19c684/b32c563eed804d1ab62adcf91529ebe7/FLAGd9fc56dfd [2021-07-05 01:00:21,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6db19c684/b32c563eed804d1ab62adcf91529ebe7 [2021-07-05 01:00:21,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 01:00:21,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 01:00:21,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 01:00:21,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 01:00:21,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 01:00:21,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:21,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1bd01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21, skipping insertion in model container [2021-07-05 01:00:21,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:21,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 01:00:21,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 01:00:21,919 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/ldv-regression/test29-2.c[580,593] [2021-07-05 01:00:21,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 01:00:21,926 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 01:00:21,935 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/ldv-regression/test29-2.c[580,593] [2021-07-05 01:00:21,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 01:00:21,961 INFO L208 MainTranslator]: Completed translation [2021-07-05 01:00:21,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21 WrapperNode [2021-07-05 01:00:21,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 01:00:21,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 01:00:21,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 01:00:21,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 01:00:21,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:21,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:21,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 01:00:21,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 01:00:21,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 01:00:21,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 01:00:22,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:22,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:22,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:22,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:22,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:22,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:22,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:22,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 01:00:22,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 01:00:22,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 01:00:22,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 01:00:22,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21" (1/1) ... [2021-07-05 01:00:22,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 01:00:22,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 01:00:22,052 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 01:00:22,111 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 01:00:22,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-05 01:00:22,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 01:00:22,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 01:00:22,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-05 01:00:22,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 01:00:22,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 01:00:22,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-05 01:00:22,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 01:00:22,320 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-07-05 01:00:22,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 01:00:22 BoogieIcfgContainer [2021-07-05 01:00:22,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 01:00:22,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 01:00:22,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 01:00:22,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 01:00:22,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 01:00:21" (1/3) ... [2021-07-05 01:00:22,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cc52d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 01:00:22, skipping insertion in model container [2021-07-05 01:00:22,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:21" (2/3) ... [2021-07-05 01:00:22,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cc52d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 01:00:22, skipping insertion in model container [2021-07-05 01:00:22,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 01:00:22" (3/3) ... [2021-07-05 01:00:22,326 INFO L111 eAbstractionObserver]: Analyzing ICFG test29-2.c [2021-07-05 01:00:22,341 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 01:00:22,341 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-05 01:00:22,370 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 01:00:22,374 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 01:00:22,374 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 01:00:22,384 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 01:00:22,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-05 01:00:22,387 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 01:00:22,387 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 01:00:22,387 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 01:00:22,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 01:00:22,391 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2021-07-05 01:00:22,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 01:00:22,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807578755] [2021-07-05 01:00:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 01:00:22,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 01:00:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 01:00:22,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:22,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 01:00:22,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-05 01:00:22,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-05 01:00:22,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 01:00:22,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-05 01:00:22,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:22,581 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 01:00:22,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 01:00:22,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807578755] [2021-07-05 01:00:22,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807578755] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 01:00:22,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 01:00:22,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-05 01:00:22,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031974767] [2021-07-05 01:00:22,587 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-05 01:00:22,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 01:00:22,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-05 01:00:22,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-05 01:00:22,597 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 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 01:00:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 01:00:22,676 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-07-05 01:00:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-05 01:00:22,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 9 [2021-07-05 01:00:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 01:00:22,682 INFO L225 Difference]: With dead ends: 25 [2021-07-05 01:00:22,682 INFO L226 Difference]: Without dead ends: 10 [2021-07-05 01:00:22,684 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-07-05 01:00:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-07-05 01:00:22,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-07-05 01:00:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 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 01:00:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2021-07-05 01:00:22,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2021-07-05 01:00:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 01:00:22,702 INFO L442 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2021-07-05 01:00:22,702 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 01:00:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2021-07-05 01:00:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-05 01:00:22,703 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 01:00:22,703 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 01:00:22,703 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 01:00:22,703 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 01:00:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 01:00:22,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1182785712, now seen corresponding path program 1 times [2021-07-05 01:00:22,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 01:00:22,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725664903] [2021-07-05 01:00:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 01:00:22,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 01:00:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 01:00:22,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:22,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 01:00:22,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 01:00:22,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-05 01:00:22,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 01:00:22,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-05 01:00:22,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:22,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:22,770 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 01:00:22,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 01:00:22,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725664903] [2021-07-05 01:00:22,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725664903] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 01:00:22,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 01:00:22,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-05 01:00:22,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548486606] [2021-07-05 01:00:22,772 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-05 01:00:22,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 01:00:22,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-05 01:00:22,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-05 01:00:22,774 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 01:00:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 01:00:22,800 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-07-05 01:00:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-05 01:00:22,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 9 [2021-07-05 01:00:22,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 01:00:22,800 INFO L225 Difference]: With dead ends: 10 [2021-07-05 01:00:22,801 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 01:00:22,801 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-05 01:00:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 01:00:22,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 01:00:22,802 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 01:00:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 01:00:22,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-07-05 01:00:22,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 01:00:22,802 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 01:00:22,803 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 01:00:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 01:00:22,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 01:00:22,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-05 01:00:22,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 01:00:22,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 01:00:22,814 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-05 01:00:22,814 INFO L762 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-07-05 01:00:22,814 INFO L762 garLoopResultBuilder]: For program point L23-2(lines 23 25) no Hoare annotation was computed. [2021-07-05 01:00:22,814 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-05 01:00:22,814 INFO L762 garLoopResultBuilder]: For program point L17-2(line 17) no Hoare annotation was computed. [2021-07-05 01:00:22,814 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-05 01:00:22,815 INFO L765 garLoopResultBuilder]: At program point L30(lines 13 31) the Hoare annotation is: true [2021-07-05 01:00:22,815 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-05 01:00:22,815 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-05 01:00:22,815 INFO L758 garLoopResultBuilder]: At program point L24(lines 14 31) the Hoare annotation is: false [2021-07-05 01:00:22,815 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2021-07-05 01:00:22,815 INFO L762 garLoopResultBuilder]: For program point L18(lines 18 22) no Hoare annotation was computed. [2021-07-05 01:00:22,816 INFO L762 garLoopResultBuilder]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2021-07-05 01:00:22,816 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 01:00:22,816 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 01:00:22,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 01:00:22 BoogieIcfgContainer [2021-07-05 01:00:22,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 01:00:22,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 01:00:22,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 01:00:22,826 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 01:00:22,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 01:00:22" (3/4) ... [2021-07-05 01:00:22,828 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-05 01:00:22,835 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-07-05 01:00:22,835 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-07-05 01:00:22,835 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 01:00:22,835 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 01:00:22,857 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 01:00:22,857 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 01:00:22,858 INFO L168 Benchmark]: Toolchain (without parser) took 1074.79 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.6 MB in the beginning and 32.7 MB in the end (delta: -1.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:22,858 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 01:00:22,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.81 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 51.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:22,859 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.52 ms. Allocated memory is still 67.1 MB. Free memory was 51.5 MB in the beginning and 50.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 01:00:22,859 INFO L168 Benchmark]: Boogie Preprocessor took 31.76 ms. Allocated memory is still 67.1 MB. Free memory was 50.2 MB in the beginning and 49.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 01:00:22,860 INFO L168 Benchmark]: RCFGBuilder took 289.47 ms. Allocated memory is still 67.1 MB. Free memory was 49.1 MB in the beginning and 36.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:22,860 INFO L168 Benchmark]: TraceAbstraction took 502.79 ms. Allocated memory is still 67.1 MB. Free memory was 35.7 MB in the beginning and 35.6 MB in the end (delta: 147.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:22,860 INFO L168 Benchmark]: Witness Printer took 32.10 ms. Allocated memory is still 67.1 MB. Free memory was 35.6 MB in the beginning and 32.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:22,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 191.81 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 51.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.52 ms. Allocated memory is still 67.1 MB. Free memory was 51.5 MB in the beginning and 50.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.76 ms. Allocated memory is still 67.1 MB. Free memory was 50.2 MB in the beginning and 49.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 289.47 ms. Allocated memory is still 67.1 MB. Free memory was 49.1 MB in the beginning and 36.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 502.79 ms. Allocated memory is still 67.1 MB. Free memory was 35.7 MB in the beginning and 35.6 MB in the end (delta: 147.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Witness Printer took 32.10 ms. Allocated memory is still 67.1 MB. Free memory was 35.6 MB in the beginning and 32.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 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: 29]: 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: 450.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.0ms, AutomataDifference: 124.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 8.1ms, InitialAbstractionConstructionTime: 6.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 24 SDslu, 22 SDs, 0 SdLazy, 63 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 93.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.6ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 5.7ms SsaConstructionTime, 31.6ms SatisfiabilityAnalysisTime, 171.5ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-07-05 01:00:22,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...