./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-zilu/benchmark10_conjunctive.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a9444e5380fed44b00432b26b7edd9414dfa93ba2d2f76306ea753732eae2b3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 15:37:25,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 15:37:25,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 15:37:25,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 15:37:25,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 15:37:25,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 15:37:25,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 15:37:25,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 15:37:25,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 15:37:25,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 15:37:25,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 15:37:25,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 15:37:25,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 15:37:25,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 15:37:25,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 15:37:25,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 15:37:25,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 15:37:25,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 15:37:25,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 15:37:25,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 15:37:25,791 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 15:37:25,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 15:37:25,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 15:37:25,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 15:37:25,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 15:37:25,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 15:37:25,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 15:37:25,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 15:37:25,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 15:37:25,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 15:37:25,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 15:37:25,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 15:37:25,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 15:37:25,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 15:37:25,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 15:37:25,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 15:37:25,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 15:37:25,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 15:37:25,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 15:37:25,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 15:37:25,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 15:37:25,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 15:37:25,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 15:37:25,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 15:37:25,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 15:37:25,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 15:37:25,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 15:37:25,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 15:37:25,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 15:37:25,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 15:37:25,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 15:37:25,856 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 15:37:25,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 15:37:25,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 15:37:25,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 15:37:25,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 15:37:25,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 15:37:25,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 15:37:25,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 15:37:25,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 15:37:25,859 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 15:37:25,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 15:37:25,859 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 15:37:25,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 15:37:25,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 15:37:25,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 15:37:25,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 15:37:25,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:37:25,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 15:37:25,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 15:37:25,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 15:37:25,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 15:37:25,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 15:37:25,862 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 15:37:25,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 15:37:25,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 15:37:25,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a9444e5380fed44b00432b26b7edd9414dfa93ba2d2f76306ea753732eae2b3 [2022-07-22 15:37:26,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 15:37:26,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 15:37:26,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 15:37:26,137 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 15:37:26,138 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 15:37:26,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i [2022-07-22 15:37:26,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d61825d/6ec3d672f1504ff5a126b894026a8ca9/FLAG4bdf299b4 [2022-07-22 15:37:26,650 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 15:37:26,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i [2022-07-22 15:37:26,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d61825d/6ec3d672f1504ff5a126b894026a8ca9/FLAG4bdf299b4 [2022-07-22 15:37:27,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d61825d/6ec3d672f1504ff5a126b894026a8ca9 [2022-07-22 15:37:27,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 15:37:27,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 15:37:27,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 15:37:27,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 15:37:27,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 15:37:27,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f80e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27, skipping insertion in model container [2022-07-22 15:37:27,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 15:37:27,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 15:37:27,239 WARN L230 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-zilu/benchmark10_conjunctive.i[873,886] [2022-07-22 15:37:27,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:37:27,266 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 15:37:27,279 WARN L230 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-zilu/benchmark10_conjunctive.i[873,886] [2022-07-22 15:37:27,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:37:27,299 INFO L208 MainTranslator]: Completed translation [2022-07-22 15:37:27,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27 WrapperNode [2022-07-22 15:37:27,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 15:37:27,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 15:37:27,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 15:37:27,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 15:37:27,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,330 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-07-22 15:37:27,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 15:37:27,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 15:37:27,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 15:37:27,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 15:37:27,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 15:37:27,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 15:37:27,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 15:37:27,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 15:37:27,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27" (1/1) ... [2022-07-22 15:37:27,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:37:27,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:37:27,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 15:37:27,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 15:37:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 15:37:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 15:37:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 15:37:27,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 15:37:27,491 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 15:37:27,493 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 15:37:27,635 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 15:37:27,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 15:37:27,640 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 15:37:27,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:37:27 BoogieIcfgContainer [2022-07-22 15:37:27,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 15:37:27,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 15:37:27,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 15:37:27,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 15:37:27,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:37:27" (1/3) ... [2022-07-22 15:37:27,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4838098a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:37:27, skipping insertion in model container [2022-07-22 15:37:27,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:37:27" (2/3) ... [2022-07-22 15:37:27,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4838098a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:37:27, skipping insertion in model container [2022-07-22 15:37:27,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:37:27" (3/3) ... [2022-07-22 15:37:27,651 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark10_conjunctive.i [2022-07-22 15:37:27,664 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 15:37:27,665 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 15:37:27,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 15:37:27,732 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5d52e5f2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1546bb [2022-07-22 15:37:27,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 15:37:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 15:37:27,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:37:27,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:37:27,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:37:27,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:37:27,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1807243399, now seen corresponding path program 1 times [2022-07-22 15:37:27,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:37:27,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444758322] [2022-07-22 15:37:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:37:27,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:37:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:37:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:37:27,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:37:27,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444758322] [2022-07-22 15:37:27,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444758322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:37:27,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:37:27,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 15:37:27,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612737229] [2022-07-22 15:37:27,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:37:27,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 15:37:27,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:37:27,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 15:37:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 15:37:27,939 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:37:27,952 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2022-07-22 15:37:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 15:37:27,954 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-22 15:37:27,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:37:27,962 INFO L225 Difference]: With dead ends: 21 [2022-07-22 15:37:27,962 INFO L226 Difference]: Without dead ends: 9 [2022-07-22 15:37:27,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 15:37:27,974 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:37:27,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:37:27,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-22 15:37:28,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-22 15:37:28,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-07-22 15:37:28,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2022-07-22 15:37:28,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:37:28,010 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-07-22 15:37:28,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:28,011 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-07-22 15:37:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 15:37:28,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:37:28,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:37:28,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 15:37:28,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:37:28,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:37:28,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1806975280, now seen corresponding path program 1 times [2022-07-22 15:37:28,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:37:28,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732287771] [2022-07-22 15:37:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:37:28,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:37:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:37:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:37:28,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:37:28,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732287771] [2022-07-22 15:37:28,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732287771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:37:28,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:37:28,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 15:37:28,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445775253] [2022-07-22 15:37:28,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:37:28,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 15:37:28,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:37:28,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 15:37:28,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 15:37:28,164 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:37:28,176 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-07-22 15:37:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 15:37:28,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-22 15:37:28,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:37:28,177 INFO L225 Difference]: With dead ends: 18 [2022-07-22 15:37:28,177 INFO L226 Difference]: Without dead ends: 14 [2022-07-22 15:37:28,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 15:37:28,179 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:37:28,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 13 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:37:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-22 15:37:28,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2022-07-22 15:37:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-07-22 15:37:28,183 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2022-07-22 15:37:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:37:28,184 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-07-22 15:37:28,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-07-22 15:37:28,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 15:37:28,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:37:28,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:37:28,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 15:37:28,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:37:28,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:37:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash 183324243, now seen corresponding path program 1 times [2022-07-22 15:37:28,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:37:28,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981685405] [2022-07-22 15:37:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:37:28,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:37:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:37:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:37:28,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:37:28,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981685405] [2022-07-22 15:37:28,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981685405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:37:28,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:37:28,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 15:37:28,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579597929] [2022-07-22 15:37:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:37:28,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 15:37:28,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:37:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 15:37:28,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 15:37:28,221 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:28,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:37:28,234 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-07-22 15:37:28,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 15:37:28,235 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 [2022-07-22 15:37:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:37:28,236 INFO L225 Difference]: With dead ends: 14 [2022-07-22 15:37:28,236 INFO L226 Difference]: Without dead ends: 10 [2022-07-22 15:37:28,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 15:37:28,238 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:37:28,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:37:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-22 15:37:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-22 15:37:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2022-07-22 15:37:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-22 15:37:28,241 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2022-07-22 15:37:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:37:28,242 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-22 15:37:28,242 INFO L496 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) [2022-07-22 15:37:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-22 15:37:28,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 15:37:28,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:37:28,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:37:28,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 15:37:28,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:37:28,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:37:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1389600693, now seen corresponding path program 1 times [2022-07-22 15:37:28,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:37:28,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550905653] [2022-07-22 15:37:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:37:28,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:37:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:37:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:37:28,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:37:28,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550905653] [2022-07-22 15:37:28,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550905653] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:37:28,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681432785] [2022-07-22 15:37:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:37:28,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:37:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:37:28,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:37:28,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 15:37:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:37:28,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 15:37:28,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:37:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:37:28,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:37:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:37:28,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681432785] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:37:28,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:37:28,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-22 15:37:28,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174875627] [2022-07-22 15:37:28,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:37:28,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 15:37:28,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:37:28,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 15:37:28,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-22 15:37:28,451 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:28,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:37:28,485 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-07-22 15:37:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 15:37:28,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 [2022-07-22 15:37:28,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:37:28,486 INFO L225 Difference]: With dead ends: 20 [2022-07-22 15:37:28,486 INFO L226 Difference]: Without dead ends: 16 [2022-07-22 15:37:28,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-22 15:37:28,494 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:37:28,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 19 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:37:28,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-22 15:37:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-07-22 15:37:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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) [2022-07-22 15:37:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-07-22 15:37:28,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2022-07-22 15:37:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:37:28,508 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-07-22 15:37:28,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:28,509 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-07-22 15:37:28,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-22 15:37:28,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:37:28,510 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:37:28,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 15:37:28,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:37:28,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:37:28,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:37:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1013296068, now seen corresponding path program 2 times [2022-07-22 15:37:28,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:37:28,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589519331] [2022-07-22 15:37:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:37:28,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:37:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:37:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:37:28,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:37:28,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589519331] [2022-07-22 15:37:28,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589519331] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:37:28,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260912498] [2022-07-22 15:37:28,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 15:37:28,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:37:28,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:37:28,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 15:37:28,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 15:37:28,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 15:37:28,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:37:28,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 15:37:28,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:37:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:37:28,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:37:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:37:29,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260912498] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:37:29,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:37:29,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 20 [2022-07-22 15:37:29,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583387222] [2022-07-22 15:37:29,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:37:29,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 15:37:29,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:37:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 15:37:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-07-22 15:37:29,066 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:37:29,488 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-07-22 15:37:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 15:37:29,488 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 15 [2022-07-22 15:37:29,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:37:29,488 INFO L225 Difference]: With dead ends: 30 [2022-07-22 15:37:29,488 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 15:37:29,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=431, Invalid=1291, Unknown=0, NotChecked=0, Total=1722 [2022-07-22 15:37:29,491 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 32 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:37:29,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 11 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 15:37:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 15:37:29,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 15:37:29,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 15:37:29,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-07-22 15:37:29,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:37:29,492 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 15:37:29,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:37:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 15:37:29,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 15:37:29,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 15:37:29,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 15:37:29,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:37:29,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 15:37:29,795 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-22 15:37:29,795 INFO L902 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: true [2022-07-22 15:37:29,796 INFO L895 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~0#1|)) (.cse1 (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~i~0#1|))) (or (and .cse0 (<= 4 |ULTIMATE.start_main_~c~0#1|)) (and .cse0 (<= |ULTIMATE.start_main_~i~0#1| 3) (<= 4 .cse1)) (and (<= 0 .cse1) (<= |ULTIMATE.start_main_~i~0#1| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|)) (and .cse0 (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2)) (and .cse0 (<= 1 .cse1) (<= |ULTIMATE.start_main_~i~0#1| 1)))) [2022-07-22 15:37:29,796 INFO L899 garLoopResultBuilder]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2022-07-22 15:37:29,796 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-07-22 15:37:29,796 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-22 15:37:29,796 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-22 15:37:29,796 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-22 15:37:29,796 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-07-22 15:37:29,797 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-07-22 15:37:29,797 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-07-22 15:37:29,797 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-07-22 15:37:29,797 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2022-07-22 15:37:29,800 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-07-22 15:37:29,802 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 15:37:29,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:37:29 BoogieIcfgContainer [2022-07-22 15:37:29,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 15:37:29,818 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 15:37:29,818 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 15:37:29,819 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 15:37:29,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:37:27" (3/4) ... [2022-07-22 15:37:29,822 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 15:37:29,831 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-22 15:37:29,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-22 15:37:29,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 15:37:29,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 15:37:29,860 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 15:37:29,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 15:37:29,861 INFO L158 Benchmark]: Toolchain (without parser) took 2787.46ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 61.1MB in the beginning and 57.7MB in the end (delta: 3.4MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2022-07-22 15:37:29,862 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 48.8MB in the beginning and 48.7MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:37:29,862 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.91ms. Allocated memory is still 92.3MB. Free memory was 60.9MB in the beginning and 69.8MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 15:37:29,862 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.68ms. Allocated memory is still 92.3MB. Free memory was 69.8MB in the beginning and 68.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:37:29,862 INFO L158 Benchmark]: Boogie Preprocessor took 30.52ms. Allocated memory is still 92.3MB. Free memory was 68.5MB in the beginning and 67.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:37:29,863 INFO L158 Benchmark]: RCFGBuilder took 278.92ms. Allocated memory is still 92.3MB. Free memory was 67.5MB in the beginning and 58.3MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 15:37:29,863 INFO L158 Benchmark]: TraceAbstraction took 2174.11ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 57.7MB in the beginning and 59.8MB in the end (delta: -2.1MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2022-07-22 15:37:29,863 INFO L158 Benchmark]: Witness Printer took 42.62ms. Allocated memory is still 111.1MB. Free memory was 59.8MB in the beginning and 57.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:37:29,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 48.8MB in the beginning and 48.7MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.91ms. Allocated memory is still 92.3MB. Free memory was 60.9MB in the beginning and 69.8MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.68ms. Allocated memory is still 92.3MB. Free memory was 69.8MB in the beginning and 68.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.52ms. Allocated memory is still 92.3MB. Free memory was 68.5MB in the beginning and 67.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 278.92ms. Allocated memory is still 92.3MB. Free memory was 67.5MB in the beginning and 58.3MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2174.11ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 57.7MB in the beginning and 59.8MB in the end (delta: -2.1MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Witness Printer took 42.62ms. Allocated memory is still 111.1MB. Free memory was 59.8MB in the beginning and 57.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 40 mSDtfsCounter, 102 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 13 NumberOfFragments, 55 HoareAnnotationTreeSize, 2 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 6/51 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: 23]: Loop Invariant Derived loop invariant: ((((1 <= i && 4 <= c) || ((1 <= i && i <= 3) && 4 <= c + i)) || ((0 <= c + i && i <= 0) && 0 <= i)) || ((1 <= i && 1 <= c) && i <= 2)) || ((1 <= i && 1 <= c + i) && i <= 1) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-22 15:37:29,911 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE