./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-zilu/benchmark11_linear.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/benchmark11_linear.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 1b6c3c4a08a6fb295c1c4fab8bc900d28d2fcc27918ce3a2796a972590d147fe --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 17:10:20,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 17:10:20,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 17:10:20,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 17:10:20,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 17:10:20,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 17:10:20,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 17:10:20,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 17:10:20,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 17:10:20,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 17:10:20,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 17:10:20,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 17:10:20,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 17:10:20,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 17:10:20,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 17:10:20,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 17:10:20,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 17:10:20,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 17:10:20,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 17:10:20,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 17:10:20,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 17:10:20,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 17:10:20,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 17:10:20,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 17:10:20,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 17:10:20,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 17:10:20,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 17:10:20,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 17:10:20,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 17:10:20,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 17:10:20,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 17:10:20,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 17:10:20,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 17:10:20,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 17:10:20,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 17:10:20,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 17:10:20,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 17:10:20,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 17:10:20,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 17:10:20,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 17:10:20,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 17:10:20,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 17:10:20,178 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 17:10:20,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 17:10:20,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 17:10:20,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 17:10:20,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 17:10:20,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 17:10:20,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 17:10:20,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 17:10:20,180 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 17:10:20,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 17:10:20,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 17:10:20,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 17:10:20,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 17:10:20,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 17:10:20,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 17:10:20,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 17:10:20,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 17:10:20,181 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 17:10:20,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 17:10:20,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 17:10:20,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 17:10:20,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 17:10:20,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 17:10:20,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 17:10:20,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:10:20,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 17:10:20,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 17:10:20,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 17:10:20,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 17:10:20,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 17:10:20,183 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 17:10:20,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 17:10:20,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 17:10:20,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b6c3c4a08a6fb295c1c4fab8bc900d28d2fcc27918ce3a2796a972590d147fe [2022-02-20 17:10:20,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 17:10:20,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 17:10:20,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 17:10:20,397 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 17:10:20,398 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 17:10:20,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark11_linear.i [2022-02-20 17:10:20,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85584f375/8bcf86278ec24dc7a3543e72f1c62c7c/FLAGcfce82682 [2022-02-20 17:10:20,807 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 17:10:20,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark11_linear.i [2022-02-20 17:10:20,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85584f375/8bcf86278ec24dc7a3543e72f1c62c7c/FLAGcfce82682 [2022-02-20 17:10:21,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85584f375/8bcf86278ec24dc7a3543e72f1c62c7c [2022-02-20 17:10:21,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 17:10:21,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 17:10:21,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 17:10:21,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 17:10:21,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 17:10:21,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd79385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21, skipping insertion in model container [2022-02-20 17:10:21,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 17:10:21,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 17:10:21,355 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/benchmark11_linear.i[868,881] [2022-02-20 17:10:21,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:10:21,386 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 17:10:21,397 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/benchmark11_linear.i[868,881] [2022-02-20 17:10:21,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:10:21,418 INFO L208 MainTranslator]: Completed translation [2022-02-20 17:10:21,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21 WrapperNode [2022-02-20 17:10:21,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 17:10:21,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 17:10:21,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 17:10:21,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 17:10:21,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,447 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2022-02-20 17:10:21,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 17:10:21,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 17:10:21,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 17:10:21,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 17:10:21,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 17:10:21,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 17:10:21,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 17:10:21,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 17:10:21,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21" (1/1) ... [2022-02-20 17:10:21,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:10:21,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:10:21,492 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) [2022-02-20 17:10:21,533 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 [2022-02-20 17:10:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 17:10:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 17:10:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 17:10:21,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 17:10:21,587 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 17:10:21,588 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 17:10:21,713 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 17:10:21,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 17:10:21,717 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 17:10:21,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:10:21 BoogieIcfgContainer [2022-02-20 17:10:21,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 17:10:21,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 17:10:21,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 17:10:21,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 17:10:21,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 05:10:21" (1/3) ... [2022-02-20 17:10:21,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6635f2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:10:21, skipping insertion in model container [2022-02-20 17:10:21,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:10:21" (2/3) ... [2022-02-20 17:10:21,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6635f2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:10:21, skipping insertion in model container [2022-02-20 17:10:21,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:10:21" (3/3) ... [2022-02-20 17:10:21,725 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark11_linear.i [2022-02-20 17:10:21,728 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 17:10:21,728 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 17:10:21,758 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 17:10:21,764 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 [2022-02-20 17:10:21,764 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 17:10:21,775 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) [2022-02-20 17:10:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-20 17:10:21,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:10:21,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:10:21,779 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:10:21,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:10:21,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2022-02-20 17:10:21,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:10:21,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628269849] [2022-02-20 17:10:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:10:21,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:10:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:10:21,893 INFO L290 TraceCheckUtils]: 0: Hoare triple {15#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(21, 2); {15#true} is VALID [2022-02-20 17:10:21,893 INFO L290 TraceCheckUtils]: 1: Hoare triple {15#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_~x~0#1, main_~n~0#1;assume -2147483648 <= main_#t~nondet1#1 && main_#t~nondet1#1 <= 2147483647;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;assume -2147483648 <= main_#t~nondet2#1 && main_#t~nondet2#1 <= 2147483647;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; {15#true} is VALID [2022-02-20 17:10:21,894 INFO L290 TraceCheckUtils]: 2: Hoare triple {15#true} assume !!(0 == main_~x~0#1 && main_~n~0#1 > 0); {15#true} is VALID [2022-02-20 17:10:21,895 INFO L290 TraceCheckUtils]: 3: Hoare triple {15#true} assume !true; {16#false} is VALID [2022-02-20 17:10:21,895 INFO L290 TraceCheckUtils]: 4: Hoare triple {16#false} assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~x~0#1 == main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {16#false} is VALID [2022-02-20 17:10:21,895 INFO L290 TraceCheckUtils]: 5: Hoare triple {16#false} assume 0 == __VERIFIER_assert_~cond#1; {16#false} is VALID [2022-02-20 17:10:21,895 INFO L290 TraceCheckUtils]: 6: Hoare triple {16#false} assume !false; {16#false} is VALID [2022-02-20 17:10:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:10:21,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 17:10:21,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628269849] [2022-02-20 17:10:21,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628269849] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:10:21,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:10:21,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 17:10:21,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759878133] [2022-02-20 17:10:21,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:10:21,903 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 [2022-02-20 17:10:21,904 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:10:21,906 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 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) [2022-02-20 17:10:21,915 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:10:21,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 17:10:21,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 17:10:21,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 17:10:21,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:10:21,934 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) [2022-02-20 17:10:21,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:10:21,953 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-02-20 17:10:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 17:10:21,954 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 [2022-02-20 17:10:21,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:10:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-20 17:10:21,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 23 transitions. [2022-02-20 17:10:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-20 17:10:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 23 transitions. [2022-02-20 17:10:21,960 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 23 transitions. [2022-02-20 17:10:21,988 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:10:22,002 INFO L225 Difference]: With dead ends: 20 [2022-02-20 17:10:22,004 INFO L226 Difference]: Without dead ends: 8 [2022-02-20 17:10:22,007 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 [2022-02-20 17:10:22,012 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 [2022-02-20 17:10:22,014 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] [2022-02-20 17:10:22,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-02-20 17:10:22,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-02-20 17:10:22,032 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:10:22,033 INFO L82 GeneralOperation]: Start isEquivalent. First operand 8 states. Second 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) [2022-02-20 17:10:22,034 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second 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) [2022-02-20 17:10:22,035 INFO L87 Difference]: Start difference. First operand 8 states. Second 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) [2022-02-20 17:10:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:10:22,037 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2022-02-20 17:10:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-02-20 17:10:22,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:10:22,038 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:10:22,038 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 8 states. [2022-02-20 17:10:22,039 INFO L87 Difference]: Start difference. First 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) Second operand 8 states. [2022-02-20 17:10:22,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:10:22,041 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2022-02-20 17:10:22,042 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-02-20 17:10:22,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:10:22,042 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:10:22,042 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:10:22,042 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:10:22,043 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) [2022-02-20 17:10:22,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-02-20 17:10:22,048 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2022-02-20 17:10:22,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:10:22,048 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-02-20 17:10:22,049 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) [2022-02-20 17:10:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-02-20 17:10:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-20 17:10:22,050 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:10:22,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:10:22,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 17:10:22,051 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:10:22,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:10:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2022-02-20 17:10:22,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:10:22,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289962841] [2022-02-20 17:10:22,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:10:22,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:10:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:10:22,129 INFO L290 TraceCheckUtils]: 0: Hoare triple {67#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(21, 2); {67#true} is VALID [2022-02-20 17:10:22,131 INFO L290 TraceCheckUtils]: 1: Hoare triple {67#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_~x~0#1, main_~n~0#1;assume -2147483648 <= main_#t~nondet1#1 && main_#t~nondet1#1 <= 2147483647;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;assume -2147483648 <= main_#t~nondet2#1 && main_#t~nondet2#1 <= 2147483647;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; {67#true} is VALID [2022-02-20 17:10:22,132 INFO L290 TraceCheckUtils]: 2: Hoare triple {67#true} assume !!(0 == main_~x~0#1 && main_~n~0#1 > 0); {69#(<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~n~0#1|)} is VALID [2022-02-20 17:10:22,133 INFO L290 TraceCheckUtils]: 3: Hoare triple {69#(<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~n~0#1|)} assume !(main_~x~0#1 < main_~n~0#1); {68#false} is VALID [2022-02-20 17:10:22,133 INFO L290 TraceCheckUtils]: 4: Hoare triple {68#false} assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~x~0#1 == main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {68#false} is VALID [2022-02-20 17:10:22,134 INFO L290 TraceCheckUtils]: 5: Hoare triple {68#false} assume 0 == __VERIFIER_assert_~cond#1; {68#false} is VALID [2022-02-20 17:10:22,134 INFO L290 TraceCheckUtils]: 6: Hoare triple {68#false} assume !false; {68#false} is VALID [2022-02-20 17:10:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:10:22,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 17:10:22,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289962841] [2022-02-20 17:10:22,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289962841] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:10:22,139 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:10:22,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 17:10:22,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630394467] [2022-02-20 17:10:22,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:10:22,141 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 [2022-02-20 17:10:22,142 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:10:22,143 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 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) [2022-02-20 17:10:22,151 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:10:22,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-20 17:10:22,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 17:10:22,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-20 17:10:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 17:10:22,152 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) [2022-02-20 17:10:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:10:22,176 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-02-20 17:10:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-20 17:10:22,176 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 [2022-02-20 17:10:22,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:10:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-20 17:10:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2022-02-20 17:10:22,180 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-20 17:10:22,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2022-02-20 17:10:22,186 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 13 transitions. [2022-02-20 17:10:22,202 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:10:22,203 INFO L225 Difference]: With dead ends: 13 [2022-02-20 17:10:22,203 INFO L226 Difference]: Without dead ends: 9 [2022-02-20 17:10:22,206 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 [2022-02-20 17:10:22,208 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 17:10:22,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 17:10:22,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-02-20 17:10:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-02-20 17:10:22,215 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:10:22,215 INFO L82 GeneralOperation]: Start isEquivalent. First operand 9 states. Second 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) [2022-02-20 17:10:22,215 INFO L74 IsIncluded]: Start isIncluded. First operand 9 states. Second 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) [2022-02-20 17:10:22,216 INFO L87 Difference]: Start difference. First operand 9 states. Second 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) [2022-02-20 17:10:22,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:10:22,217 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-02-20 17:10:22,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-02-20 17:10:22,218 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:10:22,218 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:10:22,218 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 9 states. [2022-02-20 17:10:22,218 INFO L87 Difference]: Start difference. First 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) Second operand 9 states. [2022-02-20 17:10:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:10:22,225 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-02-20 17:10:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-02-20 17:10:22,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:10:22,225 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:10:22,225 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:10:22,226 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:10:22,226 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) [2022-02-20 17:10:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-02-20 17:10:22,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-02-20 17:10:22,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:10:22,228 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-02-20 17:10:22,228 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) [2022-02-20 17:10:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-02-20 17:10:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-20 17:10:22,229 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:10:22,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:10:22,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 17:10:22,229 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:10:22,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:10:22,230 INFO L85 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2022-02-20 17:10:22,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:10:22,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859864817] [2022-02-20 17:10:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:10:22,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:10:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:10:22,374 INFO L290 TraceCheckUtils]: 0: Hoare triple {116#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(21, 2); {116#true} is VALID [2022-02-20 17:10:22,374 INFO L290 TraceCheckUtils]: 1: Hoare triple {116#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_~x~0#1, main_~n~0#1;assume -2147483648 <= main_#t~nondet1#1 && main_#t~nondet1#1 <= 2147483647;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;assume -2147483648 <= main_#t~nondet2#1 && main_#t~nondet2#1 <= 2147483647;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; {116#true} is VALID [2022-02-20 17:10:22,375 INFO L290 TraceCheckUtils]: 2: Hoare triple {116#true} assume !!(0 == main_~x~0#1 && main_~n~0#1 > 0); {118#(<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~n~0#1|)} is VALID [2022-02-20 17:10:22,376 INFO L290 TraceCheckUtils]: 3: Hoare triple {118#(<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~n~0#1|)} assume !!(main_~x~0#1 < main_~n~0#1);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; {119#(< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~n~0#1| 1))} is VALID [2022-02-20 17:10:22,377 INFO L290 TraceCheckUtils]: 4: Hoare triple {119#(< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~n~0#1| 1))} assume !(main_~x~0#1 < main_~n~0#1); {120#(and (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~n~0#1| 1)))} is VALID [2022-02-20 17:10:22,377 INFO L290 TraceCheckUtils]: 5: Hoare triple {120#(and (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~n~0#1| 1)))} assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~x~0#1 == main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {121#(not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))} is VALID [2022-02-20 17:10:22,378 INFO L290 TraceCheckUtils]: 6: Hoare triple {121#(not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))} assume 0 == __VERIFIER_assert_~cond#1; {117#false} is VALID [2022-02-20 17:10:22,378 INFO L290 TraceCheckUtils]: 7: Hoare triple {117#false} assume !false; {117#false} is VALID [2022-02-20 17:10:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:10:22,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 17:10:22,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859864817] [2022-02-20 17:10:22,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859864817] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 17:10:22,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482596936] [2022-02-20 17:10:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:10:22,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 17:10:22,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:10:22,418 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) [2022-02-20 17:10:22,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-20 17:10:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:10:22,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-20 17:10:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:10:22,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 17:10:22,804 INFO L290 TraceCheckUtils]: 0: Hoare triple {116#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(21, 2); {116#true} is VALID [2022-02-20 17:10:22,804 INFO L290 TraceCheckUtils]: 1: Hoare triple {116#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_~x~0#1, main_~n~0#1;assume -2147483648 <= main_#t~nondet1#1 && main_#t~nondet1#1 <= 2147483647;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;assume -2147483648 <= main_#t~nondet2#1 && main_#t~nondet2#1 <= 2147483647;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; {116#true} is VALID [2022-02-20 17:10:22,805 INFO L290 TraceCheckUtils]: 2: Hoare triple {116#true} assume !!(0 == main_~x~0#1 && main_~n~0#1 > 0); {131#(and (< 0 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 0))} is VALID [2022-02-20 17:10:22,805 INFO L290 TraceCheckUtils]: 3: Hoare triple {131#(and (< 0 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 0))} assume !!(main_~x~0#1 < main_~n~0#1);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; {135#(and (< 0 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1))} is VALID [2022-02-20 17:10:22,806 INFO L290 TraceCheckUtils]: 4: Hoare triple {135#(and (< 0 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1))} assume !(main_~x~0#1 < main_~n~0#1); {139#(and (< 0 |ULTIMATE.start_main_~n~0#1|) (not (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 1))} is VALID [2022-02-20 17:10:22,807 INFO L290 TraceCheckUtils]: 5: Hoare triple {139#(and (< 0 |ULTIMATE.start_main_~n~0#1|) (not (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 1))} assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~x~0#1 == main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {143#(<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)} is VALID [2022-02-20 17:10:22,807 INFO L290 TraceCheckUtils]: 6: Hoare triple {143#(<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)} assume 0 == __VERIFIER_assert_~cond#1; {117#false} is VALID [2022-02-20 17:10:22,807 INFO L290 TraceCheckUtils]: 7: Hoare triple {117#false} assume !false; {117#false} is VALID [2022-02-20 17:10:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:10:22,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 17:10:22,895 INFO L290 TraceCheckUtils]: 7: Hoare triple {117#false} assume !false; {117#false} is VALID [2022-02-20 17:10:22,896 INFO L290 TraceCheckUtils]: 6: Hoare triple {143#(<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)} assume 0 == __VERIFIER_assert_~cond#1; {117#false} is VALID [2022-02-20 17:10:22,897 INFO L290 TraceCheckUtils]: 5: Hoare triple {120#(and (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~n~0#1| 1)))} assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~x~0#1 == main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {143#(<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)} is VALID [2022-02-20 17:10:22,897 INFO L290 TraceCheckUtils]: 4: Hoare triple {119#(< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~n~0#1| 1))} assume !(main_~x~0#1 < main_~n~0#1); {120#(and (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~n~0#1| 1)))} is VALID [2022-02-20 17:10:22,898 INFO L290 TraceCheckUtils]: 3: Hoare triple {118#(<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~n~0#1|)} assume !!(main_~x~0#1 < main_~n~0#1);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; {119#(< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~n~0#1| 1))} is VALID [2022-02-20 17:10:22,898 INFO L290 TraceCheckUtils]: 2: Hoare triple {116#true} assume !!(0 == main_~x~0#1 && main_~n~0#1 > 0); {118#(<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~n~0#1|)} is VALID [2022-02-20 17:10:22,898 INFO L290 TraceCheckUtils]: 1: Hoare triple {116#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_~x~0#1, main_~n~0#1;assume -2147483648 <= main_#t~nondet1#1 && main_#t~nondet1#1 <= 2147483647;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;assume -2147483648 <= main_#t~nondet2#1 && main_#t~nondet2#1 <= 2147483647;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; {116#true} is VALID [2022-02-20 17:10:22,899 INFO L290 TraceCheckUtils]: 0: Hoare triple {116#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(21, 2); {116#true} is VALID [2022-02-20 17:10:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:10:22,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482596936] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 17:10:22,899 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 17:10:22,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-02-20 17:10:22,900 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147168038] [2022-02-20 17:10:22,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 17:10:22,900 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 [2022-02-20 17:10:22,900 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:10:22,901 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2022-02-20 17:10:22,910 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:10:22,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-20 17:10:22,910 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 17:10:22,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-20 17:10:22,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-20 17:10:22,911 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2022-02-20 17:10:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:10:22,980 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-02-20 17:10:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-20 17:10:22,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 [2022-02-20 17:10:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:10:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2022-02-20 17:10:22,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2022-02-20 17:10:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2022-02-20 17:10:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2022-02-20 17:10:22,982 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 13 transitions. [2022-02-20 17:10:22,991 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:10:22,991 INFO L225 Difference]: With dead ends: 12 [2022-02-20 17:10:22,991 INFO L226 Difference]: Without dead ends: 0 [2022-02-20 17:10:22,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-02-20 17:10:22,992 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 17:10:22,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 17:10:22,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-20 17:10:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-20 17:10:22,993 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:10:22,993 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second 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) [2022-02-20 17:10:22,994 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second 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) [2022-02-20 17:10:22,994 INFO L87 Difference]: Start difference. First operand 0 states. Second 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) [2022-02-20 17:10:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:10:22,994 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-02-20 17:10:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 17:10:22,994 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:10:22,994 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:10:22,995 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 0 states. [2022-02-20 17:10:22,995 INFO L87 Difference]: Start difference. First 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) Second operand 0 states. [2022-02-20 17:10:22,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:10:22,995 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-02-20 17:10:22,995 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 17:10:22,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:10:22,995 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:10:22,995 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:10:22,996 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:10:22,996 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) [2022-02-20 17:10:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-20 17:10:22,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-02-20 17:10:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:10:22,996 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-20 17:10:22,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2022-02-20 17:10:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-20 17:10:22,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:10:22,999 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 17:10:23,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-20 17:10:23,219 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 [2022-02-20 17:10:23,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-20 17:10:23,322 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-20 17:10:23,322 INFO L861 garLoopResultBuilder]: At program point L27(lines 19 28) the Hoare annotation is: true [2022-02-20 17:10:23,322 INFO L854 garLoopResultBuilder]: At program point L23-2(lines 23 25) the Hoare annotation is: (< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~n~0#1| 1)) [2022-02-20 17:10:23,323 INFO L858 garLoopResultBuilder]: For program point L23-3(lines 23 25) no Hoare annotation was computed. [2022-02-20 17:10:23,323 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-02-20 17:10:23,323 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-02-20 17:10:23,323 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-02-20 17:10:23,323 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-20 17:10:23,323 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-02-20 17:10:23,324 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-02-20 17:10:23,324 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-02-20 17:10:23,324 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2022-02-20 17:10:23,326 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-20 17:10:23,341 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 17:10:23,360 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 17:10:23,360 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 17:10:23,361 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-02-20 17:10:23,361 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-02-20 17:10:23,361 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 17:10:23,361 WARN L170 areAnnotationChecker]: L23-3 has no Hoare annotation [2022-02-20 17:10:23,363 WARN L170 areAnnotationChecker]: L23-3 has no Hoare annotation [2022-02-20 17:10:23,388 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 17:10:23,388 WARN L170 areAnnotationChecker]: L23-3 has no Hoare annotation [2022-02-20 17:10:23,389 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-02-20 17:10:23,389 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-02-20 17:10:23,389 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-02-20 17:10:23,389 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-02-20 17:10:23,389 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2022-02-20 17:10:23,389 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 17:10:23,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 05:10:23 BoogieIcfgContainer [2022-02-20 17:10:23,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 17:10:23,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 17:10:23,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 17:10:23,432 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 17:10:23,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:10:21" (3/4) ... [2022-02-20 17:10:23,449 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-02-20 17:10:23,538 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-02-20 17:10:23,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-02-20 17:10:23,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-02-20 17:10:23,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-02-20 17:10:23,666 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-20 17:10:23,672 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 17:10:23,673 INFO L158 Benchmark]: Toolchain (without parser) took 2425.71ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 111.4MB in the beginning and 138.1MB in the end (delta: -26.7MB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. [2022-02-20 17:10:23,674 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 86.0MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:10:23,674 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.16ms. Allocated memory is still 136.3MB. Free memory was 111.1MB in the beginning and 111.2MB in the end (delta: -126.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 17:10:23,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.63ms. Allocated memory is still 136.3MB. Free memory was 111.2MB in the beginning and 110.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 17:10:23,674 INFO L158 Benchmark]: Boogie Preprocessor took 18.36ms. Allocated memory is still 136.3MB. Free memory was 110.0MB in the beginning and 108.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:10:23,674 INFO L158 Benchmark]: RCFGBuilder took 251.48ms. Allocated memory is still 136.3MB. Free memory was 108.8MB in the beginning and 98.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 17:10:23,675 INFO L158 Benchmark]: TraceAbstraction took 1711.08ms. Allocated memory is still 136.3MB. Free memory was 98.4MB in the beginning and 54.3MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-02-20 17:10:23,675 INFO L158 Benchmark]: Witness Printer took 240.72ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 54.3MB in the beginning and 138.1MB in the end (delta: -83.7MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-02-20 17:10:23,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 86.0MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.16ms. Allocated memory is still 136.3MB. Free memory was 111.1MB in the beginning and 111.2MB in the end (delta: -126.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.63ms. Allocated memory is still 136.3MB. Free memory was 111.2MB in the beginning and 110.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.36ms. Allocated memory is still 136.3MB. Free memory was 110.0MB in the beginning and 108.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 251.48ms. Allocated memory is still 136.3MB. Free memory was 108.8MB in the beginning and 98.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1711.08ms. Allocated memory is still 136.3MB. Free memory was 98.4MB in the beginning and 54.3MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 240.72ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 54.3MB in the beginning and 138.1MB in the end (delta: -83.7MB). Peak memory consumption was 4.3MB. 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: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 23 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 2 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 5 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x < n + 1 RESULT: Ultimate proved your program to be correct! [2022-02-20 17:10:23,717 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