./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/benchmark04_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 6b9a965f73c3cec90a7bf30e1abcce707e2acf95b41bbd45e0beb5b55c7fe39d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:11:46,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:11:46,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:11:46,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:11:46,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:11:46,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:11:46,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:11:46,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:11:46,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:11:46,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:11:46,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:11:46,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:11:46,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:11:46,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:11:46,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:11:46,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:11:46,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:11:46,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:11:46,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:11:46,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:11:46,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:11:46,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:11:46,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:11:46,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:11:46,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:11:46,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:11:46,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:11:46,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:11:46,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:11:46,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:11:46,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:11:46,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:11:46,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:11:46,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:11:46,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:11:46,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:11:46,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:11:46,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:11:46,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:11:46,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:11:46,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:11:46,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 00:11:46,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:11:46,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:11:46,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:11:46,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:11:46,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:11:46,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:11:46,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:11:46,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:11:46,620 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:11:46,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:11:46,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:11:46,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 00:11:46,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:11:46,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:11:46,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:11:46,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:11:46,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:11:46,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:11:46,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:11:46,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:11:46,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:11:46,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:11:46,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:11:46,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:11:46,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:11:46,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:11:46,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:11:46,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:11:46,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 00:11:46,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 00:11:46,625 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:11:46,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:11:46,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:11:46,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:11:46,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b9a965f73c3cec90a7bf30e1abcce707e2acf95b41bbd45e0beb5b55c7fe39d [2021-12-16 00:11:46,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:11:46,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:11:46,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:11:46,889 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:11:46,890 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:11:46,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2021-12-16 00:11:46,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368224954/443da9970ee94e16924f3dccb7e84361/FLAGa8dfdb3b1 [2021-12-16 00:11:47,327 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:11:47,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2021-12-16 00:11:47,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368224954/443da9970ee94e16924f3dccb7e84361/FLAGa8dfdb3b1 [2021-12-16 00:11:47,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368224954/443da9970ee94e16924f3dccb7e84361 [2021-12-16 00:11:47,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:11:47,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:11:47,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:11:47,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:11:47,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:11:47,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:47,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e34cf4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47, skipping insertion in model container [2021-12-16 00:11:47,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:47,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:11:47,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:11:47,893 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/benchmark04_conjunctive.i[873,886] [2021-12-16 00:11:47,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:11:47,932 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:11:47,944 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/benchmark04_conjunctive.i[873,886] [2021-12-16 00:11:47,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:11:47,965 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:11:47,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47 WrapperNode [2021-12-16 00:11:47,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:11:47,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:11:47,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:11:47,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:11:47,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:47,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:47,993 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2021-12-16 00:11:47,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:11:47,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:11:47,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:11:47,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:11:48,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:48,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:48,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:48,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:48,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:48,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:48,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:48,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:11:48,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:11:48,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:11:48,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:11:48,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47" (1/1) ... [2021-12-16 00:11:48,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:11:48,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:11:48,056 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) [2021-12-16 00:11:48,066 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 [2021-12-16 00:11:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:11:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 00:11:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:11:48,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:11:48,133 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:11:48,134 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:11:48,202 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:11:48,206 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:11:48,207 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 00:11:48,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:11:48 BoogieIcfgContainer [2021-12-16 00:11:48,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:11:48,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:11:48,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:11:48,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:11:48,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:11:47" (1/3) ... [2021-12-16 00:11:48,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab55782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:11:48, skipping insertion in model container [2021-12-16 00:11:48,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:11:47" (2/3) ... [2021-12-16 00:11:48,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab55782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:11:48, skipping insertion in model container [2021-12-16 00:11:48,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:11:48" (3/3) ... [2021-12-16 00:11:48,216 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark04_conjunctive.i [2021-12-16 00:11:48,220 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:11:48,220 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:11:48,272 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:11:48,281 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 00:11:48,281 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:11:48,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-12-16 00:11:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 00:11:48,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:11:48,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:11:48,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:11:48,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:11:48,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-12-16 00:11:48,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:11:48,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265009969] [2021-12-16 00:11:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:11:48,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:11:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:11:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:11:48,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:11:48,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265009969] [2021-12-16 00:11:48,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265009969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:11:48,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:11:48,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 00:11:48,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898102783] [2021-12-16 00:11:48,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:11:48,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 00:11:48,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:11:48,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 00:11:48,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 00:11:48,478 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 00:11:48,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:11:48,492 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-12-16 00:11:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 00:11:48,494 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-16 00:11:48,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:11:48,500 INFO L225 Difference]: With dead ends: 20 [2021-12-16 00:11:48,500 INFO L226 Difference]: Without dead ends: 8 [2021-12-16 00:11:48,503 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:11:48,508 INFO L933 BasicCegarLoop]: 13 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, 13 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 [2021-12-16 00:11:48,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:11:48,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-16 00:11:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-16 00:11:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 00:11:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-12-16 00:11:48,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-12-16 00:11:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:11:48,529 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-12-16 00:11:48,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 00:11:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-12-16 00:11:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 00:11:48,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:11:48,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:11:48,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 00:11:48,530 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:11:48,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:11:48,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-12-16 00:11:48,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:11:48,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934750928] [2021-12-16 00:11:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:11:48,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:11:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:11:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:11:48,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:11:48,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934750928] [2021-12-16 00:11:48,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934750928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:11:48,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:11:48,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 00:11:48,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568235833] [2021-12-16 00:11:48,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:11:48,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 00:11:48,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:11:48,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 00:11:48,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 00:11:48,603 INFO L87 Difference]: Start difference. First operand 8 states and 8 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) [2021-12-16 00:11:48,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:11:48,617 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-12-16 00:11:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 00:11:48,618 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 [2021-12-16 00:11:48,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:11:48,619 INFO L225 Difference]: With dead ends: 13 [2021-12-16 00:11:48,619 INFO L226 Difference]: Without dead ends: 9 [2021-12-16 00:11:48,619 INFO L932 BasicCegarLoop]: 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 [2021-12-16 00:11:48,620 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:11:48,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:11:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-16 00:11:48,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-16 00:11:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 00:11:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-12-16 00:11:48,624 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-12-16 00:11:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:11:48,624 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-12-16 00:11:48,624 INFO L471 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) [2021-12-16 00:11:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-12-16 00:11:48,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 00:11:48,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:11:48,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:11:48,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 00:11:48,625 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:11:48,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:11:48,626 INFO L85 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2021-12-16 00:11:48,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:11:48,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669108182] [2021-12-16 00:11:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:11:48,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:11:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:11:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:11:48,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:11:48,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669108182] [2021-12-16 00:11:48,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669108182] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:11:48,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994431424] [2021-12-16 00:11:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:11:48,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:11:48,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:11:48,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:11:48,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 00:11:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:11:48,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 00:11:48,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:11:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:11:48,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 00:11:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:11:48,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994431424] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:11:48,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 00:11:48,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-12-16 00:11:48,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135662741] [2021-12-16 00:11:48,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 00:11:48,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 00:11:48,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:11:48,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 00:11:48,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 00:11:48,887 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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) [2021-12-16 00:11:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:11:48,930 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-12-16 00:11:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:11:48,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 8 [2021-12-16 00:11:48,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:11:48,931 INFO L225 Difference]: With dead ends: 14 [2021-12-16 00:11:48,931 INFO L226 Difference]: Without dead ends: 10 [2021-12-16 00:11:48,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-16 00:11:48,935 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:11:48,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:11:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-16 00:11:48,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-16 00:11:48,943 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) [2021-12-16 00:11:48,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-12-16 00:11:48,943 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-12-16 00:11:48,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:11:48,944 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-12-16 00:11:48,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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) [2021-12-16 00:11:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-12-16 00:11:48,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 00:11:48,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:11:48,950 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:11:48,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 00:11:49,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:11:49,173 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:11:49,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:11:49,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1384978123, now seen corresponding path program 2 times [2021-12-16 00:11:49,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:11:49,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162142977] [2021-12-16 00:11:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:11:49,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:11:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:11:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 00:11:49,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:11:49,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162142977] [2021-12-16 00:11:49,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162142977] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 00:11:49,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859597104] [2021-12-16 00:11:49,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 00:11:49,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:11:49,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:11:49,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 00:11:49,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 00:11:49,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 00:11:49,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 00:11:49,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 00:11:49,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:11:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:11:49,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 00:11:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 00:11:49,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859597104] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:11:49,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 00:11:49,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 10 [2021-12-16 00:11:49,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165425858] [2021-12-16 00:11:49,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 00:11:49,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 00:11:49,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:11:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 00:11:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:11:49,434 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 00:11:49,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:11:49,489 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-12-16 00:11:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 00:11:49,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 00:11:49,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:11:49,491 INFO L225 Difference]: With dead ends: 10 [2021-12-16 00:11:49,491 INFO L226 Difference]: Without dead ends: 0 [2021-12-16 00:11:49,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-12-16 00:11:49,497 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:11:49,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 9 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:11:49,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-16 00:11:49,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-16 00:11:49,501 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) [2021-12-16 00:11:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-16 00:11:49,502 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-12-16 00:11:49,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:11:49,502 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 00:11:49,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 00:11:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-16 00:11:49,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-16 00:11:49,505 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-16 00:11:49,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 00:11:49,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-16 00:11:49,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-16 00:11:49,768 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-16 00:11:49,768 INFO L861 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: true [2021-12-16 00:11:49,768 INFO L858 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-12-16 00:11:49,768 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-12-16 00:11:49,769 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-16 00:11:49,769 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-16 00:11:49,769 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-16 00:11:49,769 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-12-16 00:11:49,769 INFO L854 garLoopResultBuilder]: At program point L24-2(lines 24 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (<= 0 |ULTIMATE.start_main_~k~0#1|)) [2021-12-16 00:11:49,770 INFO L858 garLoopResultBuilder]: For program point L24-3(lines 24 27) no Hoare annotation was computed. [2021-12-16 00:11:49,770 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-12-16 00:11:49,770 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-12-16 00:11:49,773 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-12-16 00:11:49,774 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 00:11:49,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:11:49 BoogieIcfgContainer [2021-12-16 00:11:49,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 00:11:49,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 00:11:49,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 00:11:49,804 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 00:11:49,805 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:11:48" (3/4) ... [2021-12-16 00:11:49,808 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 00:11:49,816 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-16 00:11:49,830 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-16 00:11:49,830 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-16 00:11:49,830 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 00:11:49,877 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 00:11:49,888 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 00:11:49,889 INFO L158 Benchmark]: Toolchain (without parser) took 2134.68ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 75.5MB in the beginning and 75.5MB in the end (delta: -85.4kB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2021-12-16 00:11:49,889 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory is still 46.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 00:11:49,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.92ms. Allocated memory is still 100.7MB. Free memory was 75.5MB in the beginning and 76.7MB in the end (delta: -1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 00:11:49,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.39ms. Allocated memory is still 100.7MB. Free memory was 76.7MB in the beginning and 75.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 00:11:49,890 INFO L158 Benchmark]: Boogie Preprocessor took 28.57ms. Allocated memory is still 100.7MB. Free memory was 75.4MB in the beginning and 74.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 00:11:49,891 INFO L158 Benchmark]: RCFGBuilder took 185.36ms. Allocated memory is still 100.7MB. Free memory was 74.3MB in the beginning and 65.3MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 00:11:49,891 INFO L158 Benchmark]: TraceAbstraction took 1593.21ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 64.6MB in the beginning and 77.6MB in the end (delta: -13.0MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-12-16 00:11:49,891 INFO L158 Benchmark]: Witness Printer took 84.40ms. Allocated memory is still 121.6MB. Free memory was 77.6MB in the beginning and 75.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 00:11:49,893 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory is still 46.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.92ms. Allocated memory is still 100.7MB. Free memory was 75.5MB in the beginning and 76.7MB in the end (delta: -1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.39ms. Allocated memory is still 100.7MB. Free memory was 76.7MB in the beginning and 75.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.57ms. Allocated memory is still 100.7MB. Free memory was 75.4MB in the beginning and 74.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 185.36ms. Allocated memory is still 100.7MB. Free memory was 74.3MB in the beginning and 65.3MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1593.21ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 64.6MB in the beginning and 77.6MB in the end (delta: -13.0MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Witness Printer took 84.40ms. Allocated memory is still 121.6MB. Free memory was 77.6MB in the beginning and 75.5MB 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 29 mSDtfsCounter, 36 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 28 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 143 SizeOfPredicates, 11 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/12 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: 24]: Loop Invariant Derived loop invariant: n <= j + k && 0 <= k - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-16 00:11:49,985 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