./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.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/loop-invgen/id_build.i.v+lhb-reducer.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 bdc5f20645b6035e443a85580281230285a361ed ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:55:03,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 02:55:03,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 02:55:03,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 02:55:03,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 02:55:03,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 02:55:03,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 02:55:03,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 02:55:03,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 02:55:03,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 02:55:03,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 02:55:03,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 02:55:03,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 02:55:03,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 02:55:03,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 02:55:03,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 02:55:03,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 02:55:03,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 02:55:03,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 02:55:03,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 02:55:03,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 02:55:03,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 02:55:03,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 02:55:03,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 02:55:03,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 02:55:03,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 02:55:03,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 02:55:03,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 02:55:03,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 02:55:03,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 02:55:03,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 02:55:03,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 02:55:03,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 02:55:03,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 02:55:03,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 02:55:03,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 02:55:03,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 02:55:03,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 02:55:03,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 02:55:03,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 02:55:03,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 02:55:03,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 02:55:03,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 02:55:03,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 02:55:03,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 02:55:03,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 02:55:03,838 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 02:55:03,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 02:55:03,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 02:55:03,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 02:55:03,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 02:55:03,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 02:55:03,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 02:55:03,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 02:55:03,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 02:55:03,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 02:55:03,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 02:55:03,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 02:55:03,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 02:55:03,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 02:55:03,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 02:55:03,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 02:55:03,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 02:55:03,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 02:55:03,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 02:55:03,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 02:55:03,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 02:55:03,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 02:55:03,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 02:55:03,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 02:55:03,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdc5f20645b6035e443a85580281230285a361ed [2021-07-05 02:55:04,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 02:55:04,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 02:55:04,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 02:55:04,132 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 02:55:04,132 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 02:55:04,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c [2021-07-05 02:55:04,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3195846dc/6779e488a0e44fccb175fa7a1543f4a4/FLAG21796f8fb [2021-07-05 02:55:04,517 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 02:55:04,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c [2021-07-05 02:55:04,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3195846dc/6779e488a0e44fccb175fa7a1543f4a4/FLAG21796f8fb [2021-07-05 02:55:04,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3195846dc/6779e488a0e44fccb175fa7a1543f4a4 [2021-07-05 02:55:04,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 02:55:04,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 02:55:04,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 02:55:04,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 02:55:04,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 02:55:04,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba09752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04, skipping insertion in model container [2021-07-05 02:55:04,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 02:55:04,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 02:55:04,697 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[854,867] [2021-07-05 02:55:04,702 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2021-07-05 02:55:04,704 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2021-07-05 02:55:04,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 02:55:04,722 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 02:55:04,741 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[854,867] [2021-07-05 02:55:04,744 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2021-07-05 02:55:04,747 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2021-07-05 02:55:04,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 02:55:04,769 INFO L208 MainTranslator]: Completed translation [2021-07-05 02:55:04,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04 WrapperNode [2021-07-05 02:55:04,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 02:55:04,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 02:55:04,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 02:55:04,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 02:55:04,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 02:55:04,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 02:55:04,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 02:55:04,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 02:55:04,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 02:55:04,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 02:55:04,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 02:55:04,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 02:55:04,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04" (1/1) ... [2021-07-05 02:55:04,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 02:55:04,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 02:55:04,858 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 02:55:04,875 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 02:55:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 02:55:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 02:55:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 02:55:04,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 02:55:05,128 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 02:55:05,128 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-07-05 02:55:05,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:55:05 BoogieIcfgContainer [2021-07-05 02:55:05,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 02:55:05,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 02:55:05,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 02:55:05,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 02:55:05,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 02:55:04" (1/3) ... [2021-07-05 02:55:05,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a99ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 02:55:05, skipping insertion in model container [2021-07-05 02:55:05,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:55:04" (2/3) ... [2021-07-05 02:55:05,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a99ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 02:55:05, skipping insertion in model container [2021-07-05 02:55:05,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:55:05" (3/3) ... [2021-07-05 02:55:05,134 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2021-07-05 02:55:05,155 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 02:55:05,155 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-07-05 02:55:05,185 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 02:55:05,189 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 02:55:05,189 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 02:55:05,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 18 states have internal predecessors, (25), 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 02:55:05,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-05 02:55:05,201 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:55:05,202 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-05 02:55:05,202 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:55:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:55:05,210 INFO L82 PathProgramCache]: Analyzing trace with hash 889538503, now seen corresponding path program 1 times [2021-07-05 02:55:05,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:55:05,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295565358] [2021-07-05 02:55:05,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:55:05,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:55:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:55:05,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:55:05,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:55:05,358 INFO L142 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size [2021-07-05 02:55:05,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 02:55:05,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 02:55:05,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:55:05,392 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 02:55:05,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 02:55:05,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295565358] [2021-07-05 02:55:05,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295565358] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 02:55:05,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 02:55:05,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 02:55:05,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318808746] [2021-07-05 02:55:05,398 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 02:55:05,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 02:55:05,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 02:55:05,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 02:55:05,411 INFO L87 Difference]: Start difference. First operand has 19 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 18 states have internal predecessors, (25), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 02:55:05,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 02:55:05,468 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-07-05 02:55:05,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-05 02:55:05,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 02:55:05,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 02:55:05,474 INFO L225 Difference]: With dead ends: 25 [2021-07-05 02:55:05,474 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 02:55:05,477 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 02:55:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 02:55:05,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 02:55:05,491 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 02:55:05,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 02:55:05,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-07-05 02:55:05,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 02:55:05,492 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 02:55:05,493 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 02:55:05,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 02:55:05,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 02:55:05,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-05 02:55:05,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,534 INFO L762 garLoopResultBuilder]: For program point L33(lines 33 89) no Hoare annotation was computed. [2021-07-05 02:55:05,535 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,535 INFO L762 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2021-07-05 02:55:05,535 INFO L765 garLoopResultBuilder]: At program point L95(lines 14 102) the Hoare annotation is: true [2021-07-05 02:55:05,535 INFO L762 garLoopResultBuilder]: For program point L62(lines 62 70) no Hoare annotation was computed. [2021-07-05 02:55:05,536 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2021-07-05 02:55:05,536 INFO L762 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2021-07-05 02:55:05,536 INFO L758 garLoopResultBuilder]: At program point L79(lines 52 87) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0)) [2021-07-05 02:55:05,536 INFO L762 garLoopResultBuilder]: For program point L46(lines 46 87) no Hoare annotation was computed. [2021-07-05 02:55:05,536 INFO L758 garLoopResultBuilder]: At program point L69(lines 39 89) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0)) [2021-07-05 02:55:05,536 INFO L765 garLoopResultBuilder]: At program point L100(lines 13 102) the Hoare annotation is: true [2021-07-05 02:55:05,537 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,537 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,537 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,537 INFO L762 garLoopResultBuilder]: For program point L26(lines 26 96) no Hoare annotation was computed. [2021-07-05 02:55:05,537 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-07-05 02:55:05,538 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2021-07-05 02:55:05,538 INFO L762 garLoopResultBuilder]: For program point L76(lines 76 85) no Hoare annotation was computed. [2021-07-05 02:55:05,538 INFO L762 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-07-05 02:55:05,539 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 02:55:05,539 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 02:55:05,541 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/3) [2021-07-05 02:55:05,548 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 02:55:05,552 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 02:55:05,552 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 02:55:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 18 states have internal predecessors, (25), 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 02:55:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-05 02:55:05,555 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:55:05,555 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 02:55:05,555 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:55:05,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:55:05,556 INFO L82 PathProgramCache]: Analyzing trace with hash 148134121, now seen corresponding path program 1 times [2021-07-05 02:55:05,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:55:05,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011933484] [2021-07-05 02:55:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:55:05,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:55:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:55:05,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:55:05,590 INFO L142 QuantifierPusher]: treesize reduction 5, result has 50.0 percent of original size [2021-07-05 02:55:05,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 02:55:05,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 02:55:05,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:55:05,602 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 02:55:05,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 02:55:05,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011933484] [2021-07-05 02:55:05,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011933484] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 02:55:05,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 02:55:05,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 02:55:05,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025731799] [2021-07-05 02:55:05,608 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 02:55:05,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 02:55:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 02:55:05,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 02:55:05,609 INFO L87 Difference]: Start difference. First operand has 19 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 18 states have internal predecessors, (25), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 02:55:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 02:55:05,645 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-07-05 02:55:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-05 02:55:05,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-07-05 02:55:05,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 02:55:05,646 INFO L225 Difference]: With dead ends: 26 [2021-07-05 02:55:05,646 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 02:55:05,646 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-05 02:55:05,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 02:55:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 02:55:05,646 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 02:55:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 02:55:05,647 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-07-05 02:55:05,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 02:55:05,647 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 02:55:05,647 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 02:55:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 02:55:05,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 02:55:05,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-05 02:55:05,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,669 INFO L762 garLoopResultBuilder]: For program point L33(lines 33 89) no Hoare annotation was computed. [2021-07-05 02:55:05,669 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,669 INFO L762 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2021-07-05 02:55:05,670 INFO L758 garLoopResultBuilder]: At program point L95(lines 14 102) the Hoare annotation is: (< 0 (+ ULTIMATE.start_main_~main__i~0 1)) [2021-07-05 02:55:05,670 INFO L762 garLoopResultBuilder]: For program point L62(lines 62 70) no Hoare annotation was computed. [2021-07-05 02:55:05,671 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2021-07-05 02:55:05,671 INFO L762 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2021-07-05 02:55:05,671 INFO L758 garLoopResultBuilder]: At program point L79(lines 52 87) the Hoare annotation is: (and (< 0 (+ ULTIMATE.start_main_~main__i~0 1)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0)) [2021-07-05 02:55:05,671 INFO L762 garLoopResultBuilder]: For program point L46(lines 46 87) no Hoare annotation was computed. [2021-07-05 02:55:05,672 INFO L758 garLoopResultBuilder]: At program point L69(lines 39 89) the Hoare annotation is: (and (< 0 (+ ULTIMATE.start_main_~main__i~0 1)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0)) [2021-07-05 02:55:05,672 INFO L758 garLoopResultBuilder]: At program point L100(lines 13 102) the Hoare annotation is: (< 0 (+ ULTIMATE.start_main_~main__i~0 1)) [2021-07-05 02:55:05,672 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,672 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,672 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,672 INFO L762 garLoopResultBuilder]: For program point L26(lines 26 96) no Hoare annotation was computed. [2021-07-05 02:55:05,672 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-07-05 02:55:05,673 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2021-07-05 02:55:05,673 INFO L762 garLoopResultBuilder]: For program point L76(lines 76 85) no Hoare annotation was computed. [2021-07-05 02:55:05,673 INFO L762 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-07-05 02:55:05,673 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-05 02:55:05,673 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 02:55:05,673 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION was SAFE (2/3) [2021-07-05 02:55:05,676 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 02:55:05,680 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 02:55:05,680 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 02:55:05,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 18 states have internal predecessors, (25), 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 02:55:05,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-05 02:55:05,683 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:55:05,683 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 02:55:05,683 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:55:05,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:55:05,684 INFO L82 PathProgramCache]: Analyzing trace with hash 623096429, now seen corresponding path program 1 times [2021-07-05 02:55:05,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:55:05,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704945238] [2021-07-05 02:55:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:55:05,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:55:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:55:05,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:55:05,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-05 02:55:05,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 02:55:05,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 02:55:05,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:55:05,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:55:05,751 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 02:55:05,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 02:55:05,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704945238] [2021-07-05 02:55:05,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704945238] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 02:55:05,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 02:55:05,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-05 02:55:05,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054124115] [2021-07-05 02:55:05,751 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 02:55:05,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 02:55:05,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 02:55:05,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-05 02:55:05,752 INFO L87 Difference]: Start difference. First operand has 19 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 18 states have internal predecessors, (25), 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 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 02:55:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 02:55:05,902 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2021-07-05 02:55:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-05 02:55:05,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-07-05 02:55:05,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 02:55:05,909 INFO L225 Difference]: With dead ends: 38 [2021-07-05 02:55:05,909 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 02:55:05,910 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-05 02:55:05,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 02:55:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 02:55:05,910 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 02:55:05,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 02:55:05,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-05 02:55:05,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 02:55:05,911 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 02:55:05,911 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 02:55:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 02:55:05,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 02:55:05,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-05 02:55:05,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-05 02:55:05,941 INFO L762 garLoopResultBuilder]: For program point L33(lines 33 89) no Hoare annotation was computed. [2021-07-05 02:55:05,941 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,941 INFO L762 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2021-07-05 02:55:05,941 INFO L758 garLoopResultBuilder]: At program point L95(lines 14 102) the Hoare annotation is: (< 0 (+ ULTIMATE.start_main_~main__i~0 1)) [2021-07-05 02:55:05,941 INFO L762 garLoopResultBuilder]: For program point L62(lines 62 70) no Hoare annotation was computed. [2021-07-05 02:55:05,941 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2021-07-05 02:55:05,941 INFO L762 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2021-07-05 02:55:05,942 INFO L758 garLoopResultBuilder]: At program point L79(lines 52 87) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~main__i~0 1))) (and (< 0 .cse0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)) (<= .cse0 ULTIMATE.start_main_~main__nlen~0) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0))) [2021-07-05 02:55:05,942 INFO L762 garLoopResultBuilder]: For program point L46(lines 46 87) no Hoare annotation was computed. [2021-07-05 02:55:05,942 INFO L758 garLoopResultBuilder]: At program point L69(lines 39 89) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~main__i~0 1))) (and (< 0 .cse0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__nlen~0) (let ((.cse1 (<= .cse0 ULTIMATE.start_main_~main__nlen~0))) (or (and .cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 1)) (and .cse1 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 0))))))) [2021-07-05 02:55:05,942 INFO L758 garLoopResultBuilder]: At program point L100(lines 13 102) the Hoare annotation is: (< 0 (+ ULTIMATE.start_main_~main__i~0 1)) [2021-07-05 02:55:05,942 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,942 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,942 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-05 02:55:05,942 INFO L762 garLoopResultBuilder]: For program point L26(lines 26 96) no Hoare annotation was computed. [2021-07-05 02:55:05,942 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-07-05 02:55:05,942 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2021-07-05 02:55:05,942 INFO L762 garLoopResultBuilder]: For program point L76(lines 76 85) no Hoare annotation was computed. [2021-07-05 02:55:05,942 INFO L762 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-07-05 02:55:05,943 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-05 02:55:05,943 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 02:55:05,943 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION was SAFE (3/3) [2021-07-05 02:55:05,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 02:55:05 BoogieIcfgContainer [2021-07-05 02:55:05,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 02:55:05,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 02:55:05,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 02:55:05,957 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 02:55:05,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:55:05" (3/4) ... [2021-07-05 02:55:05,959 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-05 02:55:05,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-07-05 02:55:05,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-07-05 02:55:05,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 02:55:05,966 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-05 02:55:05,989 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 02:55:05,989 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 02:55:05,989 INFO L168 Benchmark]: Toolchain (without parser) took 1446.77 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 32.8 MB in the beginning and 63.8 MB in the end (delta: -30.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-07-05 02:55:05,990 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 35.7 MB in the beginning and 35.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 02:55:05,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.43 ms. Allocated memory is still 54.5 MB. Free memory was 32.7 MB in the beginning and 36.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-05 02:55:05,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.09 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 35.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 02:55:05,990 INFO L168 Benchmark]: Boogie Preprocessor took 30.52 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 34.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 02:55:05,990 INFO L168 Benchmark]: RCFGBuilder took 301.95 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 34.3 MB in the beginning and 47.0 MB in the end (delta: -12.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-07-05 02:55:05,991 INFO L168 Benchmark]: TraceAbstraction took 825.72 ms. Allocated memory is still 67.1 MB. Free memory was 46.8 MB in the beginning and 33.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-07-05 02:55:05,991 INFO L168 Benchmark]: Witness Printer took 32.44 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 33.0 MB in the beginning and 63.8 MB in the end (delta: -30.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-05 02:55:05,992 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 35.7 MB in the beginning and 35.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 224.43 ms. Allocated memory is still 54.5 MB. Free memory was 32.7 MB in the beginning and 36.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.09 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 35.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.52 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 34.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 301.95 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 34.3 MB in the beginning and 47.0 MB in the end (delta: -12.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 825.72 ms. Allocated memory is still 67.1 MB. Free memory was 46.8 MB in the beginning and 33.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Witness Printer took 32.44 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 33.0 MB in the beginning and 63.8 MB in the end (delta: -30.8 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 - 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: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 64]: 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, 19 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 358.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.1ms, AutomataDifference: 78.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 37.2ms, InitialAbstractionConstructionTime: 6.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 23 SDslu, 10 SDs, 0 SdLazy, 13 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 6 NumberOfFragments, 18 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 16.9ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 15.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 8.7ms SsaConstructionTime, 28.4ms SatisfiabilityAnalysisTime, 94.5ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 125.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.7ms, AutomataDifference: 37.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 21.7ms, InitialAbstractionConstructionTime: 0.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 22 SDslu, 7 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 7 NumberOfFragments, 25 HoareAnnotationTreeSize, 4 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 4.9ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 16.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 3.2ms SsaConstructionTime, 10.9ms SatisfiabilityAnalysisTime, 27.1ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 266.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.1ms, AutomataDifference: 158.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 29.5ms, InitialAbstractionConstructionTime: 1.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 30 SDslu, 23 SDs, 0 SdLazy, 37 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 95.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 27 HoareAnnotationTreeSize, 4 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 11.2ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 17.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 2.0ms SsaConstructionTime, 17.8ms SatisfiabilityAnalysisTime, 42.1ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 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 3 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 < main__i + 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((0 < main__i + 1 && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__i + 1 <= main__nlen) && main__i < main__nlen - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((0 < main__i + 1 && !(__VERIFIER_assert__cond == 0)) && main__i < main__nlen) && ((main__i + 1 <= main__nlen && __VERIFIER_assert__cond == 1) || (main__i + 1 <= main__nlen && !(__VERIFIER_assert__cond == 0))) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 < main__i + 1 RESULT: Ultimate proved your program to be correct! [2021-07-05 02:55:06,028 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...