./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f03a9521f9986f7627623e3bf6c079dbfbe3dc9d9c229ed8d14a2828a7d6850 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 15:18:47,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 15:18:47,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 15:18:47,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 15:18:47,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 15:18:47,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 15:18:47,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 15:18:47,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 15:18:47,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 15:18:47,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 15:18:47,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 15:18:47,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 15:18:47,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 15:18:47,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 15:18:47,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 15:18:47,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 15:18:47,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 15:18:47,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 15:18:47,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 15:18:47,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 15:18:47,112 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 15:18:47,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 15:18:47,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 15:18:47,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 15:18:47,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 15:18:47,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 15:18:47,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 15:18:47,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 15:18:47,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 15:18:47,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 15:18:47,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 15:18:47,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 15:18:47,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 15:18:47,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 15:18:47,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 15:18:47,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 15:18:47,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 15:18:47,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 15:18:47,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 15:18:47,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 15:18:47,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 15:18:47,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 15:18:47,137 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 15:18:47,166 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 15:18:47,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 15:18:47,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 15:18:47,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 15:18:47,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 15:18:47,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 15:18:47,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 15:18:47,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 15:18:47,169 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 15:18:47,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 15:18:47,171 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 15:18:47,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 15:18:47,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 15:18:47,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 15:18:47,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 15:18:47,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 15:18:47,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 15:18:47,172 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 15:18:47,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 15:18:47,172 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 15:18:47,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 15:18:47,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 15:18:47,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 15:18:47,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 15:18:47,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:18:47,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 15:18:47,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 15:18:47,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 15:18:47,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 15:18:47,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 15:18:47,175 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 15:18:47,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 15:18:47,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 15:18:47,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f03a9521f9986f7627623e3bf6c079dbfbe3dc9d9c229ed8d14a2828a7d6850 [2022-07-22 15:18:47,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 15:18:47,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 15:18:47,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 15:18:47,469 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 15:18:47,469 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 15:18:47,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c [2022-07-22 15:18:47,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30849b4b8/5ab82e3ad33e4616b1dcc128678b39d4/FLAGf96c3b3ce [2022-07-22 15:18:47,984 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 15:18:47,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i.v+lhb-reducer.c [2022-07-22 15:18:47,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30849b4b8/5ab82e3ad33e4616b1dcc128678b39d4/FLAGf96c3b3ce [2022-07-22 15:18:48,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30849b4b8/5ab82e3ad33e4616b1dcc128678b39d4 [2022-07-22 15:18:48,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 15:18:48,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 15:18:48,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 15:18:48,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 15:18:48,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 15:18:48,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2531af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48, skipping insertion in model container [2022-07-22 15:18:48,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 15:18:48,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 15:18:48,262 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-invgen/id_build.i.v+lhb-reducer.c[854,867] [2022-07-22 15:18:48,270 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-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2022-07-22 15:18:48,272 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-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2022-07-22 15:18:48,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:18:48,290 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 15:18:48,307 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-invgen/id_build.i.v+lhb-reducer.c[854,867] [2022-07-22 15:18:48,309 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-invgen/id_build.i.v+lhb-reducer.c[1096,1109] [2022-07-22 15:18:48,314 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-invgen/id_build.i.v+lhb-reducer.c[1375,1388] [2022-07-22 15:18:48,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:18:48,330 INFO L208 MainTranslator]: Completed translation [2022-07-22 15:18:48,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48 WrapperNode [2022-07-22 15:18:48,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 15:18:48,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 15:18:48,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 15:18:48,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 15:18:48,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,368 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2022-07-22 15:18:48,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 15:18:48,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 15:18:48,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 15:18:48,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 15:18:48,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 15:18:48,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 15:18:48,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 15:18:48,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 15:18:48,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48" (1/1) ... [2022-07-22 15:18:48,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:18:48,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:18:48,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 15:18:48,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 15:18:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 15:18:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 15:18:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 15:18:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 15:18:48,518 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 15:18:48,520 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 15:18:48,689 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 15:18:48,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 15:18:48,695 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 15:18:48,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:18:48 BoogieIcfgContainer [2022-07-22 15:18:48,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 15:18:48,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 15:18:48,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 15:18:48,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 15:18:48,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:18:48" (1/3) ... [2022-07-22 15:18:48,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73398a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:18:48, skipping insertion in model container [2022-07-22 15:18:48,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:18:48" (2/3) ... [2022-07-22 15:18:48,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73398a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:18:48, skipping insertion in model container [2022-07-22 15:18:48,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:18:48" (3/3) ... [2022-07-22 15:18:48,706 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2022-07-22 15:18:48,720 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 15:18:48,720 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-22 15:18:48,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 15:18:48,784 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c62670, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c3d60f1 [2022-07-22 15:18:48,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 15:18:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:18:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 15:18:48,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:18:48,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 15:18:48,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:18:48,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:18:48,815 INFO L85 PathProgramCache]: Analyzing trace with hash 889538503, now seen corresponding path program 1 times [2022-07-22 15:18:48,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:18:48,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297903712] [2022-07-22 15:18:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:18:48,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:18:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:18:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:18:49,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:18:49,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297903712] [2022-07-22 15:18:49,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297903712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:18:49,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:18:49,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 15:18:49,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923289206] [2022-07-22 15:18:49,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:18:49,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 15:18:49,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:18:49,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 15:18:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 15:18:49,095 INFO L87 Difference]: Start difference. First operand has 19 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:18:49,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:18:49,132 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-07-22 15:18:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 15:18:49,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-22 15:18:49,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:18:49,141 INFO L225 Difference]: With dead ends: 25 [2022-07-22 15:18:49,141 INFO L226 Difference]: Without dead ends: 14 [2022-07-22 15:18:49,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 15:18:49,146 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:18:49,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:18:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-22 15:18:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-22 15:18:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:18:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-07-22 15:18:49,173 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2022-07-22 15:18:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:18:49,173 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-07-22 15:18:49,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:18:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-07-22 15:18:49,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 15:18:49,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:18:49,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:18:49,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 15:18:49,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:18:49,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:18:49,176 INFO L85 PathProgramCache]: Analyzing trace with hash 148134121, now seen corresponding path program 1 times [2022-07-22 15:18:49,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:18:49,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146564208] [2022-07-22 15:18:49,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:18:49,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:18:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:18:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:18:49,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:18:49,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146564208] [2022-07-22 15:18:49,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146564208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:18:49,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:18:49,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 15:18:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109062709] [2022-07-22 15:18:49,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:18:49,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 15:18:49,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:18:49,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 15:18:49,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 15:18:49,245 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:18:49,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:18:49,292 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-07-22 15:18:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 15:18:49,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-22 15:18:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:18:49,293 INFO L225 Difference]: With dead ends: 15 [2022-07-22 15:18:49,293 INFO L226 Difference]: Without dead ends: 13 [2022-07-22 15:18:49,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 15:18:49,295 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:18:49,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:18:49,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-22 15:18:49,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-07-22 15:18:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2022-07-22 15:18:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-07-22 15:18:49,300 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2022-07-22 15:18:49,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:18:49,300 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-07-22 15:18:49,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:18:49,300 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-07-22 15:18:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-22 15:18:49,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:18:49,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:18:49,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 15:18:49,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:18:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:18:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash 623096429, now seen corresponding path program 1 times [2022-07-22 15:18:49,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:18:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628716905] [2022-07-22 15:18:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:18:49,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:18:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:18:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:18:49,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:18:49,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628716905] [2022-07-22 15:18:49,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628716905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:18:49,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:18:49,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 15:18:49,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620675542] [2022-07-22 15:18:49,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:18:49,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 15:18:49,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:18:49,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 15:18:49,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 15:18:49,418 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:18:49,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:18:49,541 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2022-07-22 15:18:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 15:18:49,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-22 15:18:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:18:49,542 INFO L225 Difference]: With dead ends: 21 [2022-07-22 15:18:49,543 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 15:18:49,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 15:18:49,546 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:18:49,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 14 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:18:49,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 15:18:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 15:18:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:18:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 15:18:49,551 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-07-22 15:18:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:18:49,551 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 15:18:49,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:18:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 15:18:49,552 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 15:18:49,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-22 15:18:49,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-22 15:18:49,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-22 15:18:49,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 15:18:49,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 15:18:49,659 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 89) no Hoare annotation was computed. [2022-07-22 15:18:49,659 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-22 15:18:49,659 INFO L899 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2022-07-22 15:18:49,660 INFO L895 garLoopResultBuilder]: At program point L95(lines 14 102) the Hoare annotation is: (< 0 (+ |ULTIMATE.start_main_~main__i~0#1| 1)) [2022-07-22 15:18:49,660 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 70) no Hoare annotation was computed. [2022-07-22 15:18:49,660 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2022-07-22 15:18:49,660 INFO L899 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2022-07-22 15:18:49,661 INFO L895 garLoopResultBuilder]: At program point L79(lines 52 87) the Hoare annotation is: (let ((.cse0 (+ |ULTIMATE.start_main_~main__i~0#1| 1))) (and (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0)) (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 0)) (< 0 .cse0) (<= .cse0 |ULTIMATE.start_main_~main__nlen~0#1|))) [2022-07-22 15:18:49,661 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 87) no Hoare annotation was computed. [2022-07-22 15:18:49,661 INFO L895 garLoopResultBuilder]: At program point L69(lines 39 89) the Hoare annotation is: (let ((.cse0 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0))) (.cse1 (< 0 (+ |ULTIMATE.start_main_~main__i~0#1| 1))) (.cse2 (< |ULTIMATE.start_main_~main__i~0#1| |ULTIMATE.start_main_~main__nlen~0#1|))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) .cse2) (and .cse0 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 0)) .cse1 .cse2))) [2022-07-22 15:18:49,661 INFO L902 garLoopResultBuilder]: At program point L100(lines 13 102) the Hoare annotation is: true [2022-07-22 15:18:49,661 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-22 15:18:49,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-22 15:18:49,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-22 15:18:49,662 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 96) no Hoare annotation was computed. [2022-07-22 15:18:49,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2022-07-22 15:18:49,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2022-07-22 15:18:49,663 INFO L899 garLoopResultBuilder]: For program point L76(lines 76 85) no Hoare annotation was computed. [2022-07-22 15:18:49,664 INFO L899 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-07-22 15:18:49,670 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-22 15:18:49,672 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 15:18:49,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:18:49 BoogieIcfgContainer [2022-07-22 15:18:49,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 15:18:49,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 15:18:49,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 15:18:49,707 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 15:18:49,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:18:48" (3/4) ... [2022-07-22 15:18:49,711 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 15:18:49,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-22 15:18:49,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-22 15:18:49,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 15:18:49,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 15:18:49,748 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 15:18:49,748 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 15:18:49,749 INFO L158 Benchmark]: Toolchain (without parser) took 1732.13ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 47.8MB in the beginning and 77.2MB in the end (delta: -29.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:18:49,749 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 81.8MB. Free memory was 52.1MB in the beginning and 52.1MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:18:49,749 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.80ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 47.7MB in the beginning and 78.5MB in the end (delta: -30.8MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-07-22 15:18:49,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.75ms. Allocated memory is still 102.8MB. Free memory was 78.5MB in the beginning and 76.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:18:49,750 INFO L158 Benchmark]: Boogie Preprocessor took 19.79ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 75.9MB in the end (delta: 969.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:18:49,750 INFO L158 Benchmark]: RCFGBuilder took 302.23ms. Allocated memory is still 102.8MB. Free memory was 75.9MB in the beginning and 66.4MB in the end (delta: 9.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 15:18:49,751 INFO L158 Benchmark]: TraceAbstraction took 1006.00ms. Allocated memory is still 102.8MB. Free memory was 65.8MB in the beginning and 79.9MB in the end (delta: -14.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-22 15:18:49,751 INFO L158 Benchmark]: Witness Printer took 41.08ms. Allocated memory is still 102.8MB. Free memory was 79.9MB in the beginning and 77.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:18:49,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 81.8MB. Free memory was 52.1MB in the beginning and 52.1MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.80ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 47.7MB in the beginning and 78.5MB in the end (delta: -30.8MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.75ms. Allocated memory is still 102.8MB. Free memory was 78.5MB in the beginning and 76.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.79ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 75.9MB in the end (delta: 969.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 302.23ms. Allocated memory is still 102.8MB. Free memory was 75.9MB in the beginning and 66.4MB in the end (delta: 9.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1006.00ms. Allocated memory is still 102.8MB. Free memory was 65.8MB in the beginning and 79.9MB in the end (delta: -14.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 41.08ms. Allocated memory is still 102.8MB. Free memory was 79.9MB in the beginning and 77.2MB in the end (delta: 2.7MB). 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: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 64]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 29 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 59 HoareAnnotationTreeSize, 4 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 156 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && main__i + 1 <= main__nlen - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 < main__i + 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((!(__VERIFIER_assert__cond == 0) && 0 < main__i + 1) && __VERIFIER_assert__cond == 1) && main__i < main__nlen) || (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && main__i < main__nlen) RESULT: Ultimate proved your program to be correct! [2022-07-22 15:18:49,792 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